THE IMAGING OF LEGACY
COLLECTIONS Prepared by Gail Hodge, CENDI Secretariat
August 1997 CENDI LEGACY COLLECTIONS TASK GROUP Lowell Langford (DOE OSTI) Charlene Luther (DOE OSTI) Gopi Nair (DTIC) Roland Ridgeway (NASA STI Program) Lou Knecht (NLM) Gail Hodge (CENDI Secretariat) CENDI is an interagency cooperative organization composed
of the scientific and technical information (STI) managers from the Departments
of Commerce, Energy, Defense, Health and Human Services, Interior, and
the National Aeronautics and Space Administration (NASA). CENDI's mission is to help improve the productivity of
Federal science- and technology-based programs through the development
and management of effective scientific and technical information support
systems. In fulfilling its mission, CENDI member agencies play an important
role in helping to strengthen U.S. competitiveness and address science-
and technology-based national priorities. In 1996, the CENDI Information Exchange Working Group surveyed the state-of-the-practice
of image scanning and optical character recognition (OCR) technologies
among the CENDI agencies. This investigation resulted in three recommendations
for follow-up tasks: 1) preparation of guidelines for the exchange of
images among CENDI members, 2) investigation of the job descriptions and
grades for employees performing scanning and OCR functions, and 3) an
investigation of the CENDI agencies' plans for imaging legacy collections,
those documents held by each STI program that predate the introduction
of scanning into the agency. These recommendations were presented to the
CENDI members at the August 1996 meeting. They were approved and included
in the Annual Work Plan for 1997. This report highlights the discussions held by the task group on the
imaging of legacy collections. The group, composed of representatives
from the National Library of Medicine (NLM), the National Aeronautics
and Space Administration (NASA), the Department of Energy Office of Scientific
and Technical Information (DOE OSTI), and the Defense Technical Information
Center (DTIC), was chaired by Barbara Bauldock (DOE OSTI). The task group
met on May 28, 1997 at the DOE Forrestal Building. Each agency presented
information regarding the size of its legacy collection, the amount of
that collection that originated with the other CENDI agencies, the status
of imaging of the legacy collection and plans for the future. This report presents the legacy collection information by agency and
discussion question topic. It is followed by a brief description of imaging
activities at other organizations that may include CENDI agency technical
reports, an analysis of the information, and recommendations for further
study. The initial findings and recommendations of the task group were
presented at the CENDI Principals' Meeting on June 24, 1997. The recommendations
are: Investigate opportunities for sharing micro-roll film
scanning equipment, for both evaluation and production purposes. Discuss virtual library concepts, approaches, and plans
and to determine how agencies can help each other in the further development
of these concepts. 1.0 INTRODUCTION
In 1996, the CENDI Information Exchange Working Group surveyed the state-of-the-practice
of image scanning and optical character recognition (OCR) technologies
among the CENDI agencies. This investigation resulted in three recommendations
for follow-up tasks: 1) preparation of guidelines for the exchange of
images among CENDI members, 2) investigation of the job descriptions and
grades for employees performing scanning and OCR functions, and 3) an
investigation of the CENDI agencies' plans for imaging legacy collections,
those documents held by each STI program that predate the introduction
of scanning into the agency. These recommendations were presented to the
CENDI members at the August 1996 meeting. They were approved and included
in the Annual Work Plan for 1997. The first two follow-up studies, being of more immediate concern to the
CENDI agencies, were completed in 1996. The last follow-up study, the
investigation of legacy collection activities and issues, began with the
first task group meeting on May 28, 1997 at the DOE Forrestal Building,
Washington, DC, moderated by chair person Barbara Bauldock (DOE). The
purpose of the meeting was to share information regarding legacy collection
scanning and to identify possible areas for resource sharing or further
investigation among the CENDI members. The team was comprised of representatives
from the National Aeronautics and Space Administration (NASA), the National
Library of Medicine (NLM), the Department of Energy, Office of Scientific
and Technical Information (DOE OSTI), and the Defense Technical Information
Center (DTIC). The representatives from DOE OSTI in Oak Ridge also participated
via videoteleconference. The meeting was organized around a series of questions prior to the meeting
prepared by the task group chair and the CENDI Secretariat's Senior Analyst
(see Appendix A). These questions were designed to identify the number
of legacy collection documents at each agency, the degree to which these
documents have been imaged, the ease with which each agency can determine
if the source of a legacy item is another CENDI agency, quality issues
found in the course of scanning legacy collections, and plans for the
future imaging and distribution of the images. The meeting began with presentations by each agency representative
prepared in answer to the discussion questions. The Senior Analyst and
Chair also presented information regarding the scanning of CENDI agency
legacy collections by other government agencies. This report presents the legacy collection information by
agency and discussion question topic. It is followed by a brief description
of imaging activities at other organizations that may include CENDI agency
technical reports, an analysis of the information, and recommendations
for further study. 2.0 DEFENSE TECHNICAL INFORMATION CENTER
(DTIC)
2.1 Size of the Legacy Collection
The legacy collection is of three types: 800,000 documents on roll microfilm
of which approximately 680,000 have citations on the database and 120,000
are catalogued on cards, 900,000 microfiche with citations on the database,
and 11,000 hardcopy documents received from base closures without citations
on the database. 2.2 Size of Legacy Collection from Other
CENDI Partners
Approximately 40,000 legacy documents are from DOE and 9,000 from NASA.
DOE documents can be identified by the "R" range of accession
numbers. NASA documents are identified by the report number. 2.3 Imaging Activities
DTIC has been scanning images of currently received documents as part
of its EDMS since October 1994. This was recently extended to include
classified documents. 66,000 documents have been created with DTIC's EDMS.
The hardcopy is discarded after scanning. Fewer documents than expected
are being received on a daily basis, so DTIC plans to use the excess scanning
capacity to convert the 11,000 hardcopy documents received from base closures.
This project will take about 3 months. DTIC's current plan is to image the legacy collection material as it
is requested. However, the equipment is not yet in place, so fiche are
still being duplicated. DTIC is investigating additional scanning equipment
to handle both microfiche and roll film conversion. An Ameritec scanner
was investigated at the recent AIIM conference. 2.4 Quality Issues
No new issues have been identified, but they are looking for software
to enhance the image quality. It would also include Seaport image software
with loose integration that will allow images to be exported from the
EDMS server to a PC, cleaned up using the image enhancement software,
and then exported back to the server. 2.5 Resources
The imaging will be performed in-house only. No resources have been allocated
because there is no specific project in place. 2.6 Other Related Projects within
the Agency
Scanning projects are underway at three related centers,
the Naval Research Library, Redstone Scientific and Technical Information
Center, and Philips Laboratory. DTIC staff plan to visit these installations
in the near future to learn from these experiences and to determine if
there are images created by these centers that can be used by DTIC. 3.0 DEPARTMENT OF ENERGY, OFFICE OF SCIENTIFIC
AND TECHNICAL INFORMATION (DOE OSTI) 3.1 Size of the Legacy Collection
There are approximately 1.2 million documents in the legacy collection
including 80,000 classified documents. 600,000 of these documents are
also in fiche. 3.2 Size of the Legacy Collection from Other
CENDI Partners Based on a study conducted by the CENDI Cataloging Working Group representatives
in August 1996, DOE loaded approximately 16,000 documents from NASA and
approximately 59,000 documents from NTIS during the three years from 1994-1996.
Statistics for the total collection are not available. Catalog records
for approximately 59,000 classified and unclassified but limited distribution
documents were received from DTIC from 1994 to-date. These records are
loaded into a separate database. The originating agency can be easily
identified. 3.3 Imaging Activities
In 1990-1991, DOE established an SGML-based electronic format for the
submission of electronic documents from DOE and its contractors. They
also accept HTML files and images in PDF, Postscript and TIFF G4. The
DOE F 1332.15, Announcement and Distribution of Department of Energy (DOE)
Scientific and Technical Information, form is also transferred electronically
with SGML coding. In 1995, OSTI established a Document Management System
Team to develop a system to capture and provide information for their
legacy collection following additional electronic information standards
for archiving such as NARA 94-4 and 945. DOE OSTI is currently imaging 130 new documents per day and legacy documents
as they are requested. They are also going back to January 1996 as part
of the InfoBridge and EnergyFiles projects. This effort will be completed
in August, 1997. The programming to create an index from the pre-1975
bibliographic records on tape is to be completed in early F98. As of early
May, there were 14,000 documents with images in the DOE system. They do not plan to begin massive legacy scanning until FY 1998. The
plan for FY 1998 is due on June 18, 1997. DOE OSTI is the archival site for DOE. This requires maintenance of a
permanent collection for preservation purposes. An upcoming "Inforum Newsletter" article highlights the plans
for partnering with labs and contractors to receive material electronically
(see Related Activities within the Agency below). DOE also plans to identify
orphan documents and scan these first. The initial date range is 1940-1975
(the years of Nuclear Science Abstracts). Orphan documents are identified
as those that cannot be expected to be received from any other source
electronically, such as the CENDI partners, international partners, or
DOE laboratories and contractors. 3.4 Quality Issues
DOE expects many of the same quality issues as addressed by the other
agencies. In addition it has had problems with some sites that provide
images scanned at only 200 dots per inch (dpi). DOE's standard is 300
dpi. The quality of the paper copy is also an issue. The DOE legacy collection
contains blue inked mimeograph paper, onion skin paper, old photostats
with reverse images, etc. The quality of the older fiche is also suspect.
There are blank pages on some of the fiche because they could not successfully
image these pages from the original. Another problem is the scanning of
color, particularly four-color process. The image comes out black. Some
graphs and tables also have multiple colors. DOE is hoping that technology
will eliminate some of these quality issues in the future. As part of DOE's Records Management Plan, a flowchart has been developed.
The flow provides for copying of fragile documents, and then scanning
the copy instead of an original. 3.5 Resources
DOE estimates that with current resources they will scan 20-50 documents
per week from the legacy collection, in addition to the current material
being received. However, they do not know if the four people who have
been detailed to the scanning for the InfoBridge project can be retained
at that high a pace throughout this period. 3.6 Other Related Projects within the Agency OSTI is partnering with Los Alamos National Lab (LANL) for receipt of
electronic documents. (LANL has imaged a large number of the LANL created
reports.) Five other laboratories are also scanning their documents, and
OSTI will enter into agreements with them. There is also a proposal to
enter into an agreement with the Information Resource Center on Plutonium.
It will have scanned 1,000 DOE documents by the end of 1997, and the number
of scanned documents will grow to approximately 14,000 over the next few
years. As the site of archival record, DOE OSTI must work with NARA. NARA is
not yet ready to take TIFF images. If NARA agrees to the full retention
plan recently submitted for approval, DOE would not send archival records
to NARA. The current retention schedule requires DOE to provide the silver
master, a diazo, and an electronic index to NARA for all documents dated
over 25 years old. NARA may not agree to electronic image files for another three to five
years. However, DOE has negotiated with NARA for the acceptance of the
ASCII SGML or HTML files that they are getting from the laboratories and
contractors as part of their electronic workflow. As of several months ago, DOE is providing only TIFF image files to NTIS
and to GPO to fulfill its Federal Depository Library (FDLP) commitment.
(DOE was part of GPO's trial project on a more electronic FDLP system.)
Because the GPO system for providing full FDLP access is not in place,
the FDLP's do not currently have access to DOE documents. However, the
plan is to have the images loaded on the GPO system. This system will
not only serve the FDLP's but the public directly. (It is not DOE's mission
to directly serve the public.) 3.7 Image Distribution
DOE has a bibliographic file available on the WWW, the DOE Reports Bibliographic
Database, which contains citations to documents sent to the Federal Depository
Libraries since January 1994. Another Webbased product, InfoBridge, is
currently being developed to deliver full text documents to the desktop.
The production version of InfoBridge, scheduled for release late summer
1997, will have links to the full text of all documents received at OSTI
since January 1, 1996. Eventually, InfoBridge will also link
to full text documents hosted on the document originator's WWW site. The
content of InfoBridge is only unlimited/unclassified material. InfoBridge resides under the EnergyFiles virtual library
concept. EnergyFiles will provide access not only to DOE products such
as InfoBridge, but to other WWW sites that are selected for their relevance.
Public access to the full EDB bibliographic file will continue to be provided
via major vendors such as Dialog. There is limited access from OSTI to
CAS, the file of limited distribution documents, and CLEO, the file of
classified documents. 4.0 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
(NASA)
4.1 Size of The Legacy Collection
There are a total of 743,000 documents in NASA CASI's legacy collection,
including 424,000 hardcopy items (many with microfiche) and 319,000 with
only microfiche available. These items date from 1975 to March 1996. There
is also a collection of about 14,000 formal series reports from NACA,
the agency that preceded NASA, which date from 1915-1952. 4.2 Size of Legacy Collection from Other
CENDI Partners
Approximately 240,000 of the 743,000 documents are from other CENDI agencies
(79,000 from DOE, 149,000 from DTIC, and 12,000 from NTIS). These can
be easily identified by a code in the bibliographic record, searchable
online. 4.3 Imaging Activities
NASA is currently creating TIFF images for all newly received documents
using its new Electronic Document Management System (EDMS) processing.
This has been in place since January 1996. Batch programs are used
to OCR the image files. The result of the OCR is not checked, but could
provide full text searching in the future. The hardcopy documents are
retained. In April 1996, NASA began imaging legacy documents not already imaged
when the documents were requested, and using the images to fill the orders.
The thought is that if one user requested a document, it is likely that
work is going on in that field of study, and, therefore, someone else
will also order that document. There have been some software problems
and the legacy scanning system is still under development. NASA discovered that it takes longer to provide a requested document
through the imaging process when the source is microfiche. This is because
the microfiche quality is an issue (see quality issues below) and often
the hardcopy must be used or a hardcopy blowback must be made from the
fiche, then scanned and the image used to fulfill the request. This has
caused problems in meeting the NASA-standard 3-day turn-around for request
fulfillment. The NASA contractor has begun to fulfill the request via
the hardcopy, if they have it, and then produce the image for legacy retention
after the delivery request has been satisfied. There are approximately 23,000 documents imaged to-date, and this is
increasing every day. It is estimated that about 10-15 percent of the
documents imaged are from the legacy collection activities rather than
daily production scanning. The second strategy is to begin a legacy collection imaging project involving
four stages. Beginning with the 1995 accession year, NASA plans to image
all material for which the NASA Center for AeroSpace Information (NASA
CASI) was the original processor of the bibliographic record. This would
include domestic and foreign non-partner, and NASA-sponsored material,documents
that they are unlikely to get in imaged format from the originators. NASA
will concentrate on those documents for which it has hardcopy first. In the second stage of the imaging project, NASA plans to image the NACA
collection. This collection of early aeronautics work is still heavily
requested, but because of its age (1915-1952) the paper is deteriorating
rapidly. This imaging project will focus on preservation. The third stage is to image 1995 accessions from international partners.
The international STI agencies with which NASA has agreements, such as
ESA, the Israel Space Agency, and NASDA in Japan, appear to be slower
to implement electronic document management systems and scanning technologies
than organizations in the United States. As part of the third stage, NASA
plans to work with the NASA Centers, international partners, CENDI members,
and other sources of material to make agreements to receive their documents
in electronic format. The fourth stage of the legacy project would involve the processing of
material from 1994 back to 1992. This procedure would be similar to that
described for 1995 accessioned documents. Once the process is completed for the five-year back-file, the scanning
of other material may follow. This includes the material from the CENDI
partners. This material is planned for later in the project in the hope
that the majority of that material will be available from the partners
in electronic form as established by the proposed CENDI image exchange
guidelines (CENDI/963), or by simply pointing to the document on the
other agency's WWW site. There is no strategy for imaging the pre-1992 material at this time.
A plan will be developed based on the experience gained from processing
the 1994 to 1992 material. Perhaps only NASA-sponsored material will be
scanned. NASA is interested in making agreements for electronic documents. This
may involve the exchange of images rather than the rescanning of these
document by NASA. It may also involve linking from the NASA bibliographic
record for the document to the image loaded on another server on the WWW
hosted by the originator or an aggregator, by retaining the URL or other
address indicator in the NASA bibliographic record. NASA has been unable
to move forward in this regard since agreements need to be established
and programs/procedures need to be developed for modifying the bibliographic
record to include the URL and for modifying the NASA WWW site. Resources
are needed to complete this programming. NASA has purchased two additional high-speed paper scanners for normal
document processing and for use on the legacy imaging project. 4.4 Quality Issues
The imaging of documents from microfiche has been incorporated in NASA's
new electronic document management system (EDMS). The microfiche scanning
is efficient and accurate for current microfiche, and even multiple fiche
can be placed in the scanner bin and run unattended, after checking the
initial setting for modifications on the first fiche. However, the quality
of older fiche is not as consistent. Tests showed that it takes more time
and more operator intervention to scan older fiche. The setting for the
scanner must be manually adjusted after each fiche, which slows the process
considerably. It may be easier to create the legacy images from the hardcopy
where it is available. There is also the problem of the quality of the
hardcopy in the legacy collection. NASA has not done much testing on the
quality issues related to legacy collection imaging, but they have identified
that there are different weights and grades of paper from tissue quality
to high glossy, thicker paper, all of which can cause problems in the
loading of the scanner. The ink is also of various qualities. There is
even some blue ink on blue paper. NASA also identified an issue related to the scanning of blank pages.
NASA did not originally plan to scan blank pages when they occur in the
original documents. However, in order to hold the page order of the hardcopy
blowback from the image, the blank pages must be scanned. 4.5 Resources
The resources for imaging will come from the in-house contractor staff
with perhaps some outside contractor support. There have been no resources
allocated to-date. NASA has a project plan only with no resources or timeline
specified. 4.6 Other Related Projects within the Agency
The NASA STI Program is unaware of any official projects for the imaging
of technical reports at the NASA centers. However, the STI program representative
is investigating the possibility that the EOS Project is imaging documents
at the Goddard Space Flight Center. If EOS is handling its documents this
way, it is possible that other individual projects are also handling technical
reports electronically. Some NASA Centers are loading the full text or expanded bibliographic
records for current reports. The NASA Technical Report Servers (TRS's)
are linked (including the STI Program's TRS at CASI). The inclusion of
reports with the TRS's has been done to different levels at different
centers; this effort is not yet well organized. A variety of formats,
including SGML, PDF, and HTML have been used to-date. The NASA CIO drafted
a directive to establish a standard format, but the draft was not sent
out pending further attempts to achieve a consensus as to what form would
best serve the NASA community and under which conditions. It has been
agreed that CASI will serve as the repository if an individual TRS determines
that a document will no longer be provided via its local server. 4.7 Image Distribution
NASA has a file of image documents loaded for searching
via the WWW. However, the beta test has not been launched yet, because
there have been problems in downloading the TIFF viewers to certain user
machine configurations. It may be necessary to request online profiling
information about the user's hardware/software environment, in order to
help determine which viewer should be used. NASA is still discussing how images of NASA documents should
be made available to the public. All the material NASA images will be
provided to NASA, NASA contractors and to other federal agencies and their
contractors only through restricted access via firewalls and node addresses.
The response of other agencies and foreign partners to this plan is an
issue. Many of the foreign partners do not want their material distributed
for free. NASA plans to work with the other CENDI members to provide NASA-imaged
material to them. 5.0 NATIONAL LIBRARY OF MEDICINE (NLM)
5.1 Imaging Activities
The NLM does not routinely scan documents processed into MEDLINE because
of copyright restrictions. However, there are several imaging experiments
underway. The Lister Hill Center is experimenting with scanning specific History
of Medicine collections. Some of these documents may be hand written.
The CENDI-proposed image exchange guidelines are being provided to the
developers of this pilot. NLM also has developed the Relais System which scans the hardcopy documents
for e-mail interlibrary loan delivery. Due to copyright issues, the scanned
images are not retained indefinitely. The NLM is interested in scanning from microfilm. 5.2 Image Distribution
The NLM also has an experimental interface for MEDLINE data back to 1966
aimed at biotechnology researchers. This search interface has been developed
by the National Center for Biotechnology Information (NCBI). It provides
a dialog box for performing simple keyword searching. The results are
ranked by relevancy and provide links to the bibliographic records of
related articles based on relevancy. More advanced features allow the
user to specify certain fields and additional Boolean search capabilities.
The controversial part of this project is that the system
is free via the WWW. There will be a press conference later in June announcing
the NLM's move to WWW access and a migration away from the traditional
systems by making the access free. An additional feature of the system includes the PubMed
interconnection between the publisher's WWW sites and MEDLINE citations.
When the user is pointed to the publisher's WWW site, he may find the
image of the journal article, the full text in one or more formats, or
a subscription information or document delivery option page. There are
24 journals available through PubMed. This system can be accessed via
the NLM Homepage under Databases and Electronic Resources. Cooperating
journals have agreed to provide information in SGML format for the building
of the bibliographic database. Two journals processed by the NLM, "Dermatology
Online Journal" and "Frontiers in BioScience," are available
in electronic format only. 6.0 RELATED IMAGING ACTIVITIES
AT OTHER ORGANIZATIONS
Possible related activities at three organizations, GPO,
NARA, and the Library of Congress, were investigated. The GPO and NARA
activities with DOE are described above. No other imaging activities at
GPO or NARA involving other CENDI agencies have been identified. NARA
has no agency-wide imaging project or plan. The imaging activities at
the Library of Congress are primarily in the area of American History. 7.0 ANALYSIS AND MAJOR RESULTS
The overlap of records among the CENDI agencies varies from agency to
agency. The cost benefit of developing a system to share legacy images
will need to be determined by each individual agency. The statistics on
the size of legacy collections, the number imaged and the number of documents
in the legacy collection received from CENDI partners is presented in
the table in Appendix A. Legacy scanning varies among the organizations. NASA images new documents
and those requested, but NASA also has a multi-phase strategy for material
unlikely to be available electronically from the originator. DOE has images
back to January 1996 for its InfoBridge product. DOE is also working with
NARA on archiving of image collections. A plan is being developed for
legacy imaging in FY 1998. NLM is imaging non-copyrighted collections
such as the History of Medicine and has a major project to link
to publisher WWW sites where full text or images are available. DTIC recently
implemented EDMS for its classified collection. It plans to image legacy
materials as requested and is investigating imaged collections available
at related libraries There are several key quality issues to be addressed when scanning legacy
collections. All agencies face problems when scanning legacy collections
due to the quality of the paper and ink of the hardcopy. The NLM History
of Medicine Project will address some of these issues. Agencies with large microfiche legacy collections, DTIC, DOE and NASA,
face problems with the quality of the older microfiche. NASA has begun
to address the possible impact of these problems on the procedures for
scanning legacy collections. DTIC and NLM need to convert roll microfilm.
DTIC is evaluating a scanner that can do roll-film, microfiche, and hardcopy.
The group discussed virtual library concepts as the technology
that leap-frogs the imaging of documents. Most stated that they preferred
to point to the image or full-text of the document rather than acquire
the document and store it redundantly. DOE and NASA are developing virtual
library concepts, which would bypass the need to exchange images for legacy
collections by pointing to the electronic document on another WWW site.
DOE has a working prototype in EnergyFiles, and NLM has experience in
connecting their WWW site to publisher sites via the PubMed system. NASA
is interested in cross-database and cross-site searching through a single
search engine. However, the post-processing of the results is important,
particularly the elimination of duplicates. Other CENDI agencies may need
similar software to fill in the gaps in their virtual library designs.
Joint development of such post-processing software was discussed. Joint
discussions about the designs and concepts for virtual libraries would
be beneficial to the agencies, providing new ideas and identifying areas
for resource sharing. In addition to these major results, the team collected statistics
on the overlap of legacy collections, identified scanning equipment being
evaluated or purchased, identified that the information collected for
the OCR/Scanning Report (CENDI/96-1) should be enhanced to include new
purchases, and shared information regarding the evaluation of equipment
to scan roll film. 8.0 RECOMMENDATIONS
The evaluation of the CENDI agencies' legacy collections results in the
following recommendations: QUESTIONS FOR LEGACY COLLECTIONS DISCUSSION
May 28, 1997 As part of the agenda for the CENDI Information Exchange Legacy Collections
meeting on May 28th, each agency is asked to give a brief overview (15
minutes) of their legacy collections and the status of the imaging of
that collection. For purposes of this initial discussion, legacy collection
material is any material that predates the installation at your agency
of an electronic document management or imaging system for current material. Here are some questions to guide your presentation. What is the size of your full text legacy collection: Hardcopy? Microfiche? How many items in the legacy collection are from other CENDI agencies
(estimate: check with your Cataloging Working Group representative since
they gathered these statistics last year)? Can you easily identify which items are from other agencies (particularly
the CENDI partners)? Is your agency imaging legacy collection material or does it have plans
to do so? If so, what is the strategy/ies being used or discussed (your agency
versus other sources, from most recent to the oldest, certain date range
only, based on customer requests, based on document type, based on medium,
based on other availablility issues, etc.)? What quality issues have been raised? Who will perform the imaging (in-house, contractor, original centers/laboratories)?
What resources have been allocated? Do you have a specific project, and, if so, what has been
accomplished to-date and what is planned? What is the time schedule? What projects are going on at your centers, laboratories,
or libraries that might be relevant? LEGACY COLLECTION STATISTICS
May 28, 1997 120,000 cards
900,000 fiche
11,000 hardcopy
(Oct. '94 to-date)
9,000 (NASA)
600,000 hardcopy
(Jan. '96 to-date)
59,000 (NTIS)
59,000 DTIC
classified and limited) (1994-1996
stats only) 319,000 fiche
only 14,000 NACA
reports in hardcopy only (Jan. '96 to-date;
legacy requests
since Apr. '97) 149,000 (DTIC)
12,000 (NTIS)
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