This collection contains 435 blueprint and diazo working drawings, created between 1946 and 1961, for projects designed by Ludwig Mies van der Rohe. The buildings represented include the 860-880 Lake Shore Drive Apartments, the 2400 Lakeview Avenue Apartments, the Commonwealth Promenade Apartments, and various buildings on the campus of Illinois Institute of Technology, all in Chicago; as well as the Bacardi Company building in Mexico City and the Pavilion Apartments for the Lafayette Park Redevelopment in Detroit. Also included in the collection are full-size working drawings for the Brno Chair, a couch, a dining room chair, the MR chair, and the Tugendhat chair.