Byers, F. M., 1961, Petrology of three volcanic suites, Umnak and Bogoslof Islands, Aleutian Islands, Alaska: Geological Society of America Bulletin, v. 72, n. 1, p. 93-128.
42: Analyses of rocks from Umnak and Bogoslof Islands, Aleutian Islands, Alaska
43: Quantitative petrographic summary of chemically analyzed rocks from Umnak and Bogoslof Islands.
44: Chemical composition and atomic ratios of augite phenocrysts in anorthite-augite-olivine basalt flow
45: Partial analyses of potassium feldspathized rocks of the volcanic rocks of central Umnak Island, Aleutian Islands, Alaska
46: Computed groundmass (g) compositions of analyzed porphyritic lavas of Umnak and Bogoslof Islands, Aleutian Islands, Alaska (numbers of columns analogous to those in table 1)
47: Minor-element analyses of phenocrysts from two porphyritic basalts of northeastern Umnak Island, Aleutian Islands, Alaska
48: Comparison of average aphyric basalt from northwestern Umnak with average Columbia basalt