Tugidak Island

Gassaway, L.D., 1935, Black sand deposits of Kodiak Island: Alaska Division of Geological and Geophysical Surveys Miscellaneous Report 135-3, 6 p.Cobb, E.H., 1972, Metallic mineral resource map of the Trinity Islands quadrangle, Alaska: U.S. Geological Survey Map MF- 468, 1 map sheet, scale 1:250,000.Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Afognak, Karluk, Kodiak, and Trinity Islands quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-860, 49 p.MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.Smith, P.S., 1933, Mineral industry of Alaska in 1930: U.S. Geological Survey Bulletin 836-A, p. 1-83.