Nye, C. J., Queen, Katherine, and McCarthy, A. M., 1998, Volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Information Circular IC 0038, unpaged, 1 sheet, scale 1:4,000,000, available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=7043 . website with links to sheets in PDF format
Patton, W. W. Jr., and Moll, E. J., 1985, Geologic map of the northern and central parts of Unalakleet quadrangle: U.S. Geological Survey Miscellaneous Field Studies Map MF 1749, unpaged, 1 sheet, scale 1:250,000.
Turner, D. L., Forbes, R. B., Albanese, Mary, Macbeth, Joyce, Lockhart, A. B., and Seed, S. M., 1980, Geothermal energy resources of Alaska: University of Alaska Fairbanks Geophysical Institute Report UAG-R 279, 19 p., 3 sheets, scale 1 at 1:2,500,000.
Hoare, J. M., and Condon, W. H., 1971, Geologic map of the St. Michael quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 0682, 5 p., 1 sheet, scale 1:250,000.