When multiple people or corporate bodies contribute to a work, their names can be listed as related, or added, entries. When the nature of the contribution can be specified, a relator term, such as client, copyright claimant, interior designer, or sculptor, is added after the name. The name of the institution and division that have custody of the original work. This information can help you locate or cite the original. This information can help you decide which of the copy photographs you want to reproduce.
Catalogers assign index terms that describe what the image shows as well as what the image is about.
The proper noun headings come from the Library of Congress Name Authority File and from the Library of Congress Subject Headings . Some collections have only preliminary index headings, and do not use standard vocabulary sources like the Thesaurus for Graphic Materials . Terms are sometimes subdivided by place and date of depiction. A title is transcribed from the original picture, or from a photographer's logbook or negative jacket. If the picture carries no caption a title is devised from another source and displayed in brackets.