The National Archives Catalog


Topical Subject

MandatoryRepeatableData TypeAuthorityPublic Element
Yes No Variable Character Length (700) None Yes
Definition:

The established, preferred form of a topical term.

Variant or non-preferred term topical headings lead to the authorized Topical Subject heading.

Purpose:

Controls the heading or entry of the Topical Subject authority record.

Supports the primary purpose of vocabulary control to achieve consistency in description and to facilitate retrieval.

Relationship: Topical Subject is the element on which all other elements used to describe topical subjects are dependent. To have any other element about a topical subject, Topical Subject must be created. Topical Subject is an independent element.
Guidance: For cataloging topical subject headings, see the Subject Cataloging Manual: Subject Headings (Library of Congress).
Examples:

Agriculture

American Civil War, 1861-1865

Ardennes, Battle of the, 1944-1945

Nuclear energy

Operation Dragoon, 1944

Presidential appointments

Training planes

Water conservation

World War, 1914-1918

World War, 1939-1945

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