A collection of rough sketches, blueprints, photographs of mock-ups, etc. of the original Rush Rhees Library, alterations over the years, and the major addition of the late 1960s.

Rush Rhees Library Addition Material includes correspondence, specifications, notes, and other documentation related to the planning, design, and construction of the 1970 addition. A thick folder of proposals, cost estimates, and correspondence relating to the renovations made to Rush Rhees Library in 1971-72 can be found in Box 6. Box 7 contains a scrapbook compiled by Augusta Hoeing, widow of Professor Charles Hoeing, who had donated $25,000 for a garden court in memory of her father, Calvin C. Laney, Rochester's first superintendent of parks.