The collection consists primarily of correspondence, photographs, project records, architectural drawings, legal documents, periodicals, news clippings and exhibition materials. The material held in this collection relates to architectural projects for Edgar J. Kaufmann by Frank Lloyd Wright, and the bulk of the material relates to Kaufmann's home, Fallingwater, at Bear Run, Pennsylvania. The collection documents the professional and personal relationship between the Kaufmann family and Wright, from the 1930s until the years preceding Wright's death in 1959.