The John W. Green Papers consist of materials created and assembled by Green during his civil engineering career in bridge design and include reports and publications; engineering organization directories; design information, calculations, and drawings; and two photograph albums and individual photographic prints. The bulk of the collection documents the design and construction of the San Francisco - Oakland Bay Bridge, including numerous photographs, some of which were taken by B.W. Hellings Photography of San Francisco.
The photographs also include images of completed bridges in Oregon, Washington, Utah, and elsewhere in California. Materials pertaining to Green's work for the New Cornelia Copper Company and reports by the California State Division of Highways on bridge projects in San Diego and Los Angeles, California are also part of the collection.