The Bull Collection is comprised of four: Personal Papers, Professional Papers, Office Records, and Project Records. The small amount of Personal Papers contains a student project and correspondence. The Professional Papers include correspondence with clients, colleagues and the public and articles written by Bull regarding architectural practice and building techniques. Office records are comprised of general correspondence, public relations brochures and portfolios, a firm award and portfolios documenting single projects assembled as award submissions, tear sheets and clippings for different projects, and photographs, drawings and documents of projects for use in publication, public relations or presentation material. The Project Records contain Contains design documents, correspondence, and drawings for work done independently and with his partnerships and firms.