Thematic Indexes

This data set contains a list of thematic indexes currently used by American libraries to identify compositions in the Library of Congress/NACO Authority File. For each index the following is provided: 1) a code for use in metadata schemas (such as MARC21) that identifies the index; 2) a full bibliographic citation for the index; 3) the abbreviation exactly as it appears in conjuction with the thematic index number in the LC/NAF, followed by the Library of Congress Control Number (LCCN) for the source of the abbreviation, if approved for use in an authorized access point; 4) restrictions on its use in authorized and/or variant access points; and 5) notes providing other pertinent information.