
Drewes, Harald, Fraser, G. D., Snyder, G. L., and Barnett, H. F. Jr., 1961, Geology of Unalaska Island and adjacent insular shelf, Aleutian Islands, Alaska: in Investigations of Alaskan volcanoes, U.S. Geological Survey Bulletin 1028-S, p. 583-676, 3 sheets, scale 2 at 1:250,000 and 1 unknown.
full-text PDF : 3.3 MB
plate 75 PDF : 6.7 MB
plate 76 PDF : 113 KB
plate 77 PDF : 250 KB
table 1 PDF : 326 KB

Nye, C. J., Swanson, S. E., and Reeder, J. W., 1986, Petrology and geochemistry of Quaternary volcanic rocks from Makushin volcano, central Aleutian Arc: Alaska Division of Geological & Geophysical Surveys Public-Data File PDF 86-80, 123 p., 1 sheet, scale 1:50 000.
link to DGGS website, with report and map in PDF format