Special Applications and Instructions:

Ancillary Maps, Inserts, and Subsidiary Maps:

A subsidiary map of a town, military fort, or airport receives a tracing if it is indexed, even if only for points of interest.

A subsidiary map of a college or university receives a tracing if it is indexed, even if only for points of interest. Such a subsidiary map may also receive a tracing if it is not indexed. The decision to include a tracing for the college or university is based on the quality, detail, extent, etc. of information on the subsidiary map.

A subsidiary map of a ruin or archaeological site may receive a tracing if it is indexed. If the site itself is not traced, consider a secondary subject heading for archaeology or excavations.

A subsidiary map of a park may receive a tracing if it is indexed, or if the map would be of considerable value to the user.

A subsidiary map mentioned in a title, subtitle, cover, etc., even if not indexed, frequently receives a tracing depending on prominence, detail, typography, etc.

A subsidiary map that receives a tracing does not automatically receive the same topical treatment as the main map. Any topical treatment must be justified by the content of the subsidiary map alone.

Subsidiary maps, especially insets, which portray a specific subject frequently receive subject tracings, regardless of the presence or absence of an index.

A non-subject subsidiary map that is not indexes may receive a tracing if the map would be of considerable value to the user.

Each subsidiary subject map on CIA maps receive a subject tracing. Subject headings are assigned to these subsidiary maps individually. An attempt is made to give a subject tracing to each subject mentioned in the title of each subsidiary map. No attempt is made to determine the quality or extent of subject information.