Nichols, D.R., and Yehle, L.A., 1969, Engineering - geologic map of the southeastern Copper River basin, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map 524, 1 sheet, scale 1:125,000.
Maps & Other Oversized SheetsEngineering; Engineering Geologic Map; Engineering Geology; Geologic Map; Geology; Permafrost and Periglacial