- Averitt, Paul; Berryhill, Louise R., 1950, Coal resources of the United States, A progress report, November 1, 1950: Govt. pr. off., Circular 94, ii, 33 p. :tables ;27 cm.,
- Bannerman, Harold MacColl; Pecora, William Thomas, 1950, Training geologists: A United States Geological Survey viewpoint: U.S. Geological Survey, Circular 73, 6 p. ;27 cm.,
- Berryhill, Henry L.; Brown, Donald M.; Brown, Andrew; Taylor, Dorothy A., 1950, Coal resources of Wyoming: [U.S. Geological Survey], Circular 81, iv, 78 p. :illus. ;27 cm.,
- Byrne, Frank E.; Beck, Henry V.; Bearman, Charles H.; Matthews, Claude W., 1950, Construction materials in Decatur County, Kansas: [U.S. Geological Survey], Circular 40, ii, 11 p. :illus., fold. map (in pocket) ;27cm.,
- Byrne, Frank E.; Beck, Henry V.; Coombs, Vincent B.; Johnson, Wwndell B., 1950, Geologic construction-material resources in Republic County, Kansas: [U.S. Geological Survey], Circular 79, ii, 20 p. :ill. ;27 cm.,
- Byrne, Frank E.; Houston, Max S.; Mudge, Melville R., 1950, Construction materials in Jewell County, Kansas: [U.S. Geological Survey], Circular 38, ii 21 p. :maps (1 fold., in pocket) diagrs. ;27cm.,
- Cohee, George Vincent; Burns, R. N.; Brown, Andrew; Brant, R. A.; Wright, Dorothy., 1950, Coal resources of Michigan: United States Dept. of the Interior Geological Survey, Circular 77, 56 p. :maps (1 folded) ;28 cm.,
- Denson, Norman M., 1950, The lignite deposits of the Cheyenne River and Standing Rock Indian reservations, Corson, Dewey, and Ziebach counties, South Dakota, and Sioux County, North Dakota: [U.S. Geological Survey], Circular 78, 22 p. :ill., maps (1 folded) ;27 cm.,
- Dutton, Carl E., 1950, Progress of geologic work in Iron and Dickinson Counties, Michigan: [U.S. Geological Survey], Circular 84, i, 7 p. :maps ;27 cm.,
- Frondel, Judith Weiss; Fleischer, Michael, 1950, A glossary of uranium- and thorium-bearing minerals: U.S. Dept. of the Interior, Geological Survey, Circular 74, 20 p. ;27 cm.,
- Geological Survey (U.S.), 1950, Index of surface-water records, part 11, Pacific slope basins in California, to September 30, 1948: U.S. Dept. of the Interior, Geological Survey, Circular 72, 24 p. ;27 cm.,
- Geological Survey (U.S.), 1950, Topographic instructions, Book 1, Part 1-A, Preface and contents: The Division, Circular 92, 16 p. ;27 cm.,
- Johnson, Frederick A., 1950, Some reservoir sites in the Sierra Nevada, California: [U.S. Geological Survey], Circular 85, 28 p. :map ;27 cm.,
- Kent, Deane Frederick, 1950, Techniques used in mine-water problems of the east Tennessee zinc district: [U.S. Geological Survey], Circular 71, 9 p. :ill. ;27 cm.,
- Littleton, Robert T.; section by Swenson, Herbert A., 1950, Ground-water conditions in the vicinity of Gillette, Wyoming, with a section on the quality of ground waters: U.S. Dept. of the Interior, Geological Survey, Circular 76, iv, 43 p. :ill. ;27 cm.,
- Littleton, Robert Thomas, 1950, Reconnaissance of the ground-water resources of the Wheatland Flats area, Wyoming: [U.S. Geological Survey], Circular 70, 32 p. :ill., maps ;27 cm.,
- Littleton, Robert Thomas, 1950, Reconnaissance of the geology and ground-water hydrology of the Laramie Basin, Wyoming, with special reference to the Laramie and Little Laramie River valleys: [U.S. Geological Survey], Circular 80, iv, 37 p. :ill., 2 maps ;27 cm.,
- Maher, John Charles, 1950, Detailed sections of pre-Pennsylvanian rocks along the Front Range of Colorado: [U.S. Geological Survey], Circular 68, ii, 20 p. :map. ;27 cm.,
- Read, Charles Brian; Duffner, R. T.; Wood, G. H.; Zapp, A. D., 1950, Coal resources of New Mexico: [Interior Duplicating Section], Circular 89, ii, 24 p. :fold. map, tables. ;27 cm.,
- Serr, Eugene Frank, 1950, Progress report, investigations of fluvial sediments of the Niobrara River near Cody, Nebraska: [U.S. Geological Survey], Circular 67, iii, 25 p. :ill. ;27 cm.,
- Spicer, H. Cecil, 1950, Investigation of bedrock depths by electrical-resistivity methods in the Ripon-Fond du Lac area, Wisconsin: Geological Survey, Circular 69, 37 p. :illus. ;27 cm.,
- Thompson, Morris Mordecai, 1950, The Twinplex: a new stereoplotting instrument: Department of the Interior Geological Survey, Circular 82, 8 p. :ill. ;27 cm.,
- Tychsen, Paul C.; Swenson, Herbert A., 1950, Geology and ground-water hydrology of the Heart River irrigation project and the Dickinson area, North Dakota, with a section on the mineral quality of waters of the Heart River project: U.S. Dept. of the Interior, Geological Survey, Circular 34, iv, 59 p. :ill., graphs, maps (1 fold. in pocket) ;27 cm.,
