Getty Iconography Authority

The Getty Iconography Authority ™ (IA), Cultural Objects Name Authority ® (CONA), the Union List of Artist Names ® (ULAN), the Art & Architecture Thesaurus ® (AAT), the Getty Thesaurus of Geographic Names ® (TGN) are structured resources that can be used to improve access to information about art, architecture, and other material culture. The Vocabularies are not simply 'value vocabularies,' but knowledge bases. Through rich metadata and links, the Getty Vocabularies provide powerful conduits for knowledge creation, complex research, and discovery for digital art history and related disciplines. [from https://www.getty.edu/research/tools/vocabularies/cona/about.html#purpose_ia]