1. Geology and ore deposits of the Cottonwood-American Fork Area, Utah Author/Creator: Calkins, Frank C. Publication/Creation: Washington : U.S. Govt. Print. Off, 1943 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 200-201. Access & Availability: Loading
2. Geology and ore deposits of the Cottonwood-American Fork Area, Utah Author/Creator: Calkins, Frank C., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1943 Resource Type: Book Access & Availability: Loading