Contains architectural drawings which were accessioned prior to 1980. These drawings were microfilmed as part of the Yale Architectural Archives Project. Information about the drawing (e.g., building, job, drawing set, documentation type, date, architect) was coded and entered into a database. Aperture cards containing the coded information along with a negative image of the drawing are available in Manuscripts and Archives. The database was used to produce printed indexes to the drawings by building, architect, date of drawing, and image number.