The collection includes over 140,000 pages of correspondence, which serves as a core resource for understanding Wright's personal and professional activities, relationships, and ideas. The correspondence also includes project records such as specifications, contracts, supply orders, invoices and receipts. Letters from the 1880s through the 1920s accounts for only 2% of the total correspondence in the collection (approximately 2,000 documents). The bulk of the correspondence is from the 1930s until Wright's death in 1959.

This small collection consists of 3 letters between Herbert Jacobs and Frank Lloyd Wright concerning Jacobs' upcoming book We Chose the Country. The letters document a strained relationship between the architect and his former client, with the architect expressing disastifaction with how he is portrayed in Jacobs' publication.

The collection includes 55 architectural drawing prints (blue line, wash-off, and electroic static) and small group of papers including specifications, copy of a photograph of Wright on the site, and some statements and financial records. Additional creators in the collection include landscape architect David Lawson, Northwest Mill & Supply Corp., and Taliesin Associated Architects.