Controlled vocabulary allows for the building of browsing categories in the
Center’s digital collections portal, CJH Digital Collections
(digital.cjh.org). These virtual collections allow users to search for
relevant materials across collections and partners. Controlled
vocabulary also ensures that a user retrieves all relevant materials
when searching by keyword. Subject headings are taken from the
Library of Congress Subject Headings (LCSH), Thesauri used are the
Art and Architecture Thesaurus (AAT), and the Thesaurus of Graphic
Materials (TGM).