http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
an illustrated catalogue of the drawings, prints, and photographs in the Walter Gropius Archive at the Busch-Reisinger Museum, Harvard University
Volume 4: 1945-1969, the work of the Architects Collaborative / edited by John C. Harkness.