This collection includes information about Langley and his colleagues, as well as material associated with Langley's work. The collection includes the Aerodrome project waste books, biographies of Langley and his assistant Charles Manly, newspaper clippings, correspondence (Langley's, J.E. Watkins', and miscellaneous), manuscripts regarding Langley's aircraft, photographs and drawings, work requisitions for staff labor on the project, a sketchbook, specifications and measurements for Langley's experiments, and manuscript material from the "Langley Memoir on Mechanical Flight".