OCLC FAST has headings like "American Civil War (United States : 1861-1865)" ( tagged as 147. They were previously tagged as conference name (111). I don't think I see any instructions for MARC 647 in the MARC-to-MODS 3.7 and 3.6 mappings. Is there any preferred practice for mapping this subject field into MODS?

Metadata and Catalog Librarian
Michigan State University Libraries
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From: Metadata Object Description Schema List <[log in to unmask]> On Behalf Of Meehleib, Tracy
Sent: Friday, July 17, 2020 10:27 AM
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Subject: [MODS] New and revised MODS mappings and XSLTs available at

ICYMI: The Library of Congress has made many new and revised mappings and XSLTs - for MODS 3.5, 3.6, and 3.7 -- available via the Library of Congress' MODS Conversions page<;!!HXCxUKc!njo3WKjSxzj88Y_nJrYMbyb6zgDvDZjKaICEtu6jS16XtmfV1L2P6EY5NLGPkSv_$>. These mappings and XSLTs will continue to be revised periodically as users' comments are received and as subsequent MODS Editorial Committee analysis and decisions evolve.

Tracy Meehleib
Network Development and MARC Standards Office
Library of Congress
101 Independence Ave SE
Washington, DC 20540-4402
+1 202 707 0121 (voice)
+1 202 707 0115 (fax)
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