Patricia Harpring is the Managing Editor of the Getty Vocabulary Program. There are three vocabularies in the program so far; the Art and Architecture Thesaurus (AAT), the Union List of Artist Names (ULAN), and the Getty Thesaurus of Geographic Names (TGN). A fourth vocabulary is in development: the Cultural Objects Name Authority (CONA). In this interview on Getty’s Iris blog, Harpring talks about her background and how the vocabulary projects work (much of it is driven by the users of the vocabularies). It’s an interesting look at art librarianship, cataloging, and how thesaurus projects work.