Ulrich, G.E., Hereford, R., Nealey, L.D., and Wolfe, E.W., 1979, Preliminary geologic map of the Flagstaff 1o x 2o quadrangle, Arizona: U.S. Geological Survey Open-File Report 79-0294, 1 sheet, scale 1:250,000.
Ulrich, G.E., Hereford, R., Nealey, L.D., and Wolfe, E.W., 1979, Preliminary geologic map of the Flagstaff 1o x 2o quadrangle, Arizona: U.S. Geological Survey Open-File Report 79-0294, 1 sheet, scale 1:250,000.
Map, Bedrock,