Collection includes the official records of the Conservancy, an historic structure report prepared for the Conservancy, and Graycliff-related historical artifacts and documents collected by the Conservancy.

Copies on mylar of architectural plans, drawings, photographs and site plans of the Hayes Hall Historic District on the South Campus of the State University of New York at Buffalo. The plans, drawings and photographs were used in the book Hayes Historic District, found in both the University Archives and Architecture and Planning Library under the call number NA108.B8 H388 1989.

Collection contains architectural drawings from the Historic American Buildings Survey of the Darwin D. Martin House, Buffalo, New York, designed by Frank Lloyd Wright and built in 1904.

Architectural plans for the Larkin Company's administration building which was designed by Frank Lloyd Wright.

Surveys, studies, reports and manuals regarding the restoration of the Darwin D. Martin House, 1990-1997.

Correspondence between Darwin D. Martin of Buffalo, New York and architect Frank Lloyd Wright, concerning the Wright designed homes for the Martin family.