1. Stratigraphic and structural relations of the Hoodoo Quartzite and Yellowjacket Formation of Middle Proterozoic age from Hoodoo Creek eastward to Mount Taylor, central Idaho : with a geologic map of the region between the middle fork of the Salmon River and the Salmon River Author/Creator: Ekren, E. B. 1923- (Einar Bartlett) Publication/Creation: Washington : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988 Resource Type: Book Access & Availability: Loading
2. High-temperature, large-volume, lavalike ash-flow tuffs without calderas in southwestern Idaho Author/Creator: Ekren, E. B. 1923- (Einar Bartlett) Publication/Creation: Washington : U.S. G.P.O., 1984 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1268-1272. Access & Availability: Loading
3. Geological-geophysical investigations of bedrock in the Island Fall quadrangle, Aroostook and Penobscot Counties, Maine, Author/Creator: Ekren, E. B. 1923- (Einar Bartlett) Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 526-527. Access & Availability: Loading
4. Geology and petrology of the Ute Mountains area, Colorado, Author/Creator: Ekren, E. B. 1923- (Einar Bartlett) Publication/Creation: Washington : U.S. Govt. Print. Off, 1965 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 481-483. Access & Availability: Loading