Luedke, R. G., and Smith, R. L., 1986, Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1091-F, unpaged, 3 sheets, scale 1:1,000,000. ADGGS website with links to map PDFs
Coats, R. R., 1956, Geology of northern Adak Island, Alaska: in Investigations of Alaskan volcanoes, U.S. Geological Survey Bulletin 1028-C, p. 45-67, 1 sheet, scale 1:50,000. full-text PDF : 831 KB plate 9 PDF : 3.3 MB