Preliminary Digital Surficial Geologic Map of the Douglas 30’ x 60’ Quadrangle, Converse and Platte Counties, Wyoming (1999)

Hallberg, L.L., and Case, J.C., 1999, Preliminary digital surficial geologic map of the Douglas 30' x 60' quadrangle, Converse and Platte counties, Wyoming: Wyoming State Geological Survey Hazards Section Digital Map 99-2, scale 1:100,000.