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Library of Congress >> Prints & Photographs
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Online Catalog >> Thesaurus for Graphic Materials (About)
Fields in Term Record Displays |
The Thesaurus for Graphic Materials not only assists people using the Prints & Photographs Online Catalog to find terms they may wish to use in searching for a subject, genre, or format of picture, but it also assists those who index pictures to formulate and maintain indexing terms.
The table below lists labels used in term records in the Prints & Photographs Online Catalog and in the underlying data available in the downloadable TGM file [view information on the downloadable file], with a comparison to features of the downloadable file formerly available. "Postable" terms are terms that can be used in indexing; "nonpostable" terms are terms that are not used for indexing. An asterisk indicates that the field was added as of October 2007.
| Label in PPOC Display | Tag in Current Downloadable TGM File (from Multites software) | Tag in former Downloadable TGM I and II Files (from Lexico sofwware) | NOTES |
|---|---|---|---|
| TERM | (No tag: 1st line in each term record) | MT | postable or nonpostable |
| USE | USE | USE | nonpostable (Main Term) to postable (USE) |
| FACET NOTE | Facet | Facet | geographical note |
| SCOPE NOTE | SN | PN | Formerly "Public Note" |
| USED FOR | UF | UF | postable (Main Term) to nonpostable (UF) |
| BROADER TERM(S) | BT | BT | |
| NARROWER TERM(S) | NT | NT | |
| RELATED TERM(S) | RT | RT | |
| NOTES: Catalogers Note | CN | CN | |
| NOTES: History Note | HN | HN | |
| NOTES: Former Usage Note | FUN* | clarifies TGM I & TGM II past history. Field added to TGM data in 2007. | |
| NOTES: Term Type Category | TTCForm* | Genre/format (MARC 155/655). Field added to TGM data in 2007. | |
| NOTES: Term Type Category | TTCRef* | Reference (MARC 150). Field added to TGM data in 2007. | |
| NOTES: Term Type Category | TTCSubd* | Subdivision (MARC 180+x/650+x). Field added to TGM data in 2007. | |
| NOTES: Term Type Category | TTCSubj* | Subject (MARC 150/650). Field added to TGM data in 2007. | |
| NOTES: Former Control Number | FCNgmgpc* | Control No. | Former control number from TGM II in format gmgpc000001. Applies only to terms established prior to 2007. Field added to TGM data in 2007. |
| NOTES: Former Control Number | FCNlctgm* | Control No. | Former control number from TGM I in format: lctgm000001. Applies only to terms established prior to 2007. Field added to TGM data in 2007. |
| CONTROL # | TNR* | Control number for merged TGM (new numbers assigned in 2007 in format tgm000001). Field added to TGM data in 2007. |
For a comprehensive explanation of term record elements, see Application Guidelines:
- Introduction to TGM I, Structure and Syntax (section 1.C.)
- Introduction to TGM II, Syntax and Structure (section III)
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The
Library of Congress >> Prints & Photographs
Division >> Prints & Photographs
Online Catalog >> Thesaurus for Graphic materials (About) ( November 16, 2007 )