Scope and Contents Blueprint by Schumacher and Winkler, Architects; 5 sheets. 17" x 21 3/4". One annotation that reads "Appraisal BBT 6/15/33, USCS Commission," and has a two letter peripheral.

Scope and Contents Blueprint by G.M. Drew and Private D.A. Hawkins. 4 sheets. 33" x 34". Includes a page of Notes and Datum. Annotations on the first page are "All 'sinks' shown are acid resisting- By Alberine Stone Co. New York City."

Scope and Contents Transportation map. 27 1/4" x 41". On the right hand corner is "Approved October 25, 1940, Revised May 15, 1941".

Scope and Contents Transit map. A guide to the street car and bus lines of Washington, D.C., including bus routes and fares. 26" x 37".

Scope and Contents Geological Map by the Department of the Interior of the United States, Bureau of Reclamation. Handwritten annotation that reads "50 Gori. [ink smeared] Tunnel to Henshaw Res."10 1/2" x 14".

Scope and Contents Watershed Map by the Department of the Interior, Bureau of Reclamation. Map depicts different explanations of waterways and movements of the Yuma Irrigation Project through Arizona and California. Includes handwritten notations of certain canals. 8" x 10 1/2".

Scope and Contents Tophographical Map by the Department of the Interior. Contains handwritten annotations of fault lines, canals, and tunnels. Surveyed in 1902-1903 and 1909. 16 1/2" x 20".

Scope and Contents Geological map by the U.S. Geological and Power surveys. Contains handwritten annotations of reservoirs and fault lines. Nevada-Arizona, St. Thomas. 16 1/2" x 20"

Scope and Contents Reconnaissance Map by the U.S. Geological Survey. Reprint. Contains handwritten annotations of drops and canals. 16 1/2" x 22".

Scope and Contents Comparison map. 3 1/2" x 5 1/2".