Cooper, J.R., 1960, Reconnaissance map of the Willcox, Fisher Hills, Cochise, and Dos Cabezas quadrangles, Cochise and Graham Counties, Arizona: U.S. Geological Survey Mineral Investigations Field Studies Map MF-231, 1 sheet, scale 1:62,500.
Clemons, R.E., and James, H.L., 1978, Supplemental road log no. 4; Willcox to Bowie via Dos Cabezas and Apache Pass with historical notes on Dos Cabezas, Apache Pass, Cochise, the Butterfield Overland Mail, and Fort Bowie, in Callender, J.F., and others, eds., Land of Cochise--southeastern Arizona: New Mexico Geological Society 29th Field Conference Guidebook, p. 125-142.
Cameron, S.P., 1971, Ostracades of pluvial Lake Cochise, Cochise County, southeastern Arizona: Tempe, Arizona State University, M.S. thesis.
Callender, J.F., Wilt, J.C., Clemons, R.E., and James, H.L., eds., 1978, Land of Cochise, southeastern Arizona: New Mexico Geological Society 29th Field Conference Guidebook, 372 p.
Brown, S.G., and Schumann, H.H., 1969, Geohydrology and water utilization in the Willcox basin, Graham and Cochise Counties, Arizona: U.S. Geological Survey Water-Supply Paper 1859-F, p. F1-F32.
Arizona Bureau of Mines, 1959, Geologic map of Cochise County, Arizona: Arizona Bureau of Mines, 1 sheet, scale 1;375,000 [now available as Arizona Geological Survey Map M-3-1].