Evolution of Archival Descriptive Standards
MARC AMC: data structure standard for sharing cataloging information about archival and manuscript holdings, enabling their integration with library bibliographic data in online catalogs.
APPM (1983): data content standard for data for cataloging information.
ISAD(G) -- General International Standard Archival Description (1993): Defines twenty-six elements “that may be combined to constitute the description of an archival entity” at any level.