Library of Congress >> MARC >> Authority >> 7XX >> 751

751 - Established Heading Linking Entry-Geographic Name (R)

MARC 21 Authority - Full
October 2002

First Indicator
# - Undefined

Second Indicator
0 - Library of Congress Subject Headings
1 - LC subject headings for children's literature
2 - Medical Subject Headings
3 - National Agricultural Library subject authority file
4 - Source not specified
5 - Canadian Subject Headings
6 - Répertoire de vedettes-matière
7 - Source specified in subfield $2

Subfield Codes
$a - Geographic name (NR)
$v - Form subdivision (R)
$w - Control subfield (NR)
    /0 - Link display
    /1 - Replacement complexity
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
$0 - Record control number (R)
$2 - Source of heading or term (NR)
$5 - Institution to which field applies (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)


Geographic name that is equivalent to the 151 geographic name or 181 geographic subdivision field of the same record. It links headings within a system or from different thesauri or authority files.


Most of the content designators defined for field 751 are the same as those defined for field 151 (Heading-Geographic Name), field 451 (See From Tracing-Geographic Name), and field 551 (See Also From Tracing-Geographic Name). Description, guidelines, and input conventions for shared content designators are given in the X51 Geographic Names-General Information section.

Guidelines for applying the second indicator, subfield $w (Control subfield), and subfield $2 (Source of heading or term) in field 751 are given in the 7XX Heading Linking Entries-General Information section.


Equivalent geographic names from different thesauri:

008/09 a
[established heading record]
008/10 c
[code indicating a name heading]
008/11 a
[code indicating LCSH]
151 ##$aNew York (N.Y.)
751 #2$aNew York City
[Heading from MeSH]
008/09 a
[established heading record]
008/10 c
[code indicating a name heading]
008/11 c
[code indicating MeSH]
151 ##$aNew York City
751 #0$aNew York (N.Y.)
[Heading from LCSH]

(03/06/2008) Contact Us