1. Geology of Rat Island, Aleutian Islands, Alaska / by Richard Q. Lewis, Willis H. Nelson, and Howard A. Powers. Lewis, Richard Quintin, 1919- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1960.Washington : United States Government Printing Office. Book Online
2. Ocean floor structures northeastern Rat Islands, Alaska / by George L. Snyder. Snyder, George L. (George Leonard), 1927- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1957.Washington : United States Government Printing Office. Book Online