Umnak Quadrangle References

Bundtzen, T.K., Swainbank, R.C., Deagen, J.R., and Moore, J.L., 1990, Alaska mineral industry, 1989: Alaska Division of Geological and Geophysical Surveys, Special Report 44, 100 p.
Byers, F.M, 1959, Geology of Umnak and Bogoslof Islands, Aleutian Islands, Alaska: U.S. Geological Survey Bulletin 1028-L, p. 267-369, 3 map sheets, scale 1:63,360, 1:96,000, 1:300,000.
Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture final report, 24 p. (held by Aleut Native Corporation, Anchorage, Alaska).
Cox, D.P., and Singer, D.A., 1986, Mineral deposit models: U.S. Geological Survey Bulletin 1696, 379 p.
Hertzog, D.A., 1988, References to coastal mineral occurrences of Alaska: U.S. Bureau of Mines Open-File Report 29-88, 308 p. 
Nye, C.J., Motyka, R.J., Turner, D.L., and Liss, S.A., 1992, Geology and geochemistry of the Geyser Bight geothermal area, Umnak Island, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigation 92-1, 85 p., 2 map sheets, scale 1/24,000.
Randolph, D.B., and Ellis, W.T., 1989, Unalaska 1989 final report: Battle Mountain Exploration Company, 39 p. (held by the Aleut Native Corporation, Anchorage, Alaska).
Randolph, D.B., 1990, Unalaska 1990 final report: Battle Mountain Exploration Company, 72 p. (held by the Aleut Native Corporation, Anchorage, Alaska).
Ransome, A.L., and Kerns, W.H.,1954, Names and definitions of regions, districts, and subdivisions in Alaska: U.S. Bureau of Mines Information Circular 7679, 91 p.
Roberts, P., 1974, The economic potential of selected mineral occurrences on Umnak, Unimak, and Sedanka Islands, Aleutian Islands, Alaska: Teck Corporation Limited, 30 p. (held by the Aleut Native Corporation, Anchorage, Alaska).
Simpson, D.F., 1986, Aleutian Islands project, 1985 final report: Kennecott-Alaska Exploration Company, 54 p. (held by the Aleut Native Corporation, Anchorage, Alaska).