Funded by the Council on Library Resources, this project surveyed thesauri in the fields of art and architecture to seek out existing projects and analyze their content and form. It found that no comprehensive or standardized thesaurus presently exists for art and architecture; rather individual subjects are tailored to meet the needs of a particular collection. The introduction sets forth general findings and the rationale for a general thesaurus, acknowledges the primacy of Library of Congress subject headings, and analyzes the strengths and weaknesses of that and other systems discussed. The main body presents eleven especially innovative systems: Art Index; Architectural Periodicals Index (RIBA); Artbibliographies Modern; Avery Index to Architectural Periodicals; E. Betz,"Subject Headings Used in the Library of Congress Prints and Photographs Division"; R. Chenhall, "Nomenclature for Museum Cataloging"; DARIS, "Dictionary of Materials, Medium, and Technique;" the computerized index of the "Journal of the Society of Architectural Historians"; the "Thesaurus of Iconographic Terms" of the Public Archives of Canada, Picture Division; RILA (International Repertory of the Literature of Art); and the Subject Authority File of the Photograph Archive of the Yale Center for British Art. Names of persons consulted, and word lists reviewed are included in an appendix, as is the survey questionnaire. (Author/RAA)