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 / by E.B. Ekren. Ekren, E. B. (Einar Bartlett), 1923- [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1988.[Washington, D.C.] : United States Government Printing Office. Book Online
2. The Prichard Formation of the lower part of the Belt Supergroup (middle Proterozoic), near Plains, Sanders County, Montana / by Earle R. Cressman. Cressman, Earle Rupert, 1923- [Reston, Va.] : United States Department of the Interior, Geological Survey, 1985.Washington : United States Government Printing Office. Book Online
3. Proterozoic geology of the Brady Butte area, Yavapai County, Arizona / by Philip M. Blacet. Blacet, Philip M. (Philip Merrill), 1937- [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1985.Washington : United States Government Printing Office. Book Online
4. Precambrian deposits of zinc-copper-lead sulfides and zinc spinel (gahnite) in Colorado / by Douglas M. Sheridan and William H. Raymond. Sheridan, Douglas M., 1921- [Reston, Va.] : Department of the Interior, United States Geological Survey, 1984.Washington : United States Government Printing Office. Book Online
5. Las Animas Formation (upper Precambrian) in the subsurface of southeastern Colorado / by Ogden Tweto. Tweto, Ogden, 1912-1983 [Washington, D.C.] : U.S. Dept. of the Interior, U.S. Geological Survey, 1983. Book Online
6. The Marquette Range Supergroup in the Gogebic iron district, Michigan and Wisconsin / by Robert Gordon Schmidt ; prepared in cooperation with the Geological Survey Division, Michigan Department of Natural Resources. Schmidt, Robert Gordon, 1924- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1980.Washington : United States Government Printing Office Book Online
7. Sapphirine in Precambrian rocks associated with stratabound sulfide deposits, Custer County, Colorado / by William H. Raymond, Peter A. Leiggi, and Douglas M. Sheridan. Raymond, William H. [Reston, Va.] : United States Department of the Interior, Geological Survey, 1980.Washington : United States Government Printing Office. Book Online
8. Nomenclature of Precambrian rocks in Colorado / by Ogden Tweto. Tweto, Ogden, 1912-1983 [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1977.Washington : United States Government Printing Office. Book Online
9. Geology of the Precambrian W (lower Precambrian) rocks in western Gogebic County, Michigan / by Robert Gordon Schmidt ; work done in cooperation with the Geological Survey Division, Michigan Department of Natural Resources. Schmidt, Robert Gordon, 1924- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1976.Washington : United States Government Printing Office. Book Online
10. Changes in nomenclature of upper Precambrian to lower Paleozoic(?) formations in the Natick quadrangle, eastern Massachusetts, and their tentative correlations with rocks in Rhode Island and Connecticut / by Arthur E. Nelson ; prepared in cooperation with the Commonwealth of Massachusetts, Department of Public Works. Nelson, Arthur E. (Arthur Edward), 1922- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1974.Washington : United States Government Printing Office. Book Online
11. The base of the Upper Keweenawan, Michigan and Wisconsin / by Walter S. White. White, Walter S. (Walter Stanley), 1915- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1972.Washington : United States Government Printing Office. Book Online
12. Precambrian geology of the northern Bradshaw Mountains, Yavapai County, Arizona / by C.A. Anderson and P.M. Blacet. Anderson, Charles A. (Charles Alfred), 1902-1990 [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1972.Washington : United States Government Printing Office. Book Online
13. Precambrian rocks in the Cordes area, Yavapai County, Arizona / by C.A. Anderson. Anderson, Charles A. (Charles Alfred), 1902-1990 [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1972.Washington : United States Government Printing Office. Book Online
14. Revision of Precambrian stratigraphy in the Prescott-Jerome area, Yavapai County, Arizona / by C.A. Anderson, P.M. Blacet. L.T. Silver, and T.W. Stern. Anderson, Charles A. (Charles Alfred), 1902-1990 [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1971.Washington : U.S. Government Printing Office. Book Online
15. Mineralogy and geochemistry of some Belt rocks, Montana and Idaho : a comparison of rocks from two widely separated area in Belt terrane / by J.E. Harrison and D.J. Grimes. Harrison, Jack Edward, 1924- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1970.Washington : United States Government Printing Office. Book Online
16. Structure and mineralization of Precambrian rocks in the Galena-Roubaix district, Black Hills, South Dakota / by R.W. Bayley. Bayley, Richard W. (Richard William), 1919- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1970.Washington : United States Government Printing Office. Book Online
17. The Reany Creek Formation, Marquette County, Michigan : description of a new formation of Precambrian age in northern Michigan / by Willard P. Puffett. Puffett, Willard P. (Willard Penry), 1922- [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969.Washington : United States Government Printing Office. Book Online
18. Cambrian and Precambrian rocks of the Groom district, Nevada, southern Great Basin / by Harley Barnes and Robert L. Christiansen ; prepared on behalf of the U. S. Atomic Energy Commission. Barnes, Harley, 1916-1979 [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1967.Washington : United States Government Printing Office. Book Online
19. Geology of Precambrian rocks, Idaho Springs district, Colorado / by Robert H. Moench. Moench, Robert Hadley, 1926- Washington, D.C. : United States Department of the Interior, Geological Survey, 1964.Washington, D.C. : Government Printing Office Book Online
20. Review and annotated bibliography of ancient lake deposits (Precambrian to Pleistocene) in the Western States / John H. Feth. Feth, J. H. (John Henry), 1913- [Washington, D.C.] : United States Department of the Interior, Geological Survey.Washington : United States Government Printing Office. Book Online