- Akin, P. D., 1950, Some aspects of the development of ground water in the United States and in North Dakota: Open-File Report 50-53, 5 p.,
- Armstrong, Frank C.; Full, Roy P., 1950, Geologic maps of Crystal graphite mine, Beaverhead County, Montana: Open-File Report 50-26, 6 maps,
- Bailey, Edgar Herbert, 1950, Some exploration possibilities at the New Almaden quicksilver mine, Santa Clara County, California: U.S. Geological Survey], Open-File Report 50-27, 9 p., 2 ill., folded map ;27 cm.,
- Balsley, J. R., Jr., 1950, Aeromagnetic-geologic maps of Cranberry Lake, Starke, and Childwood quadrangles and part of Russel quadrangle, New York: Open-File Report 50-28, 2 maps,
- Bennison, Allan P.; Milton, Charles, 1950, Notes to accompany preliminary geologic map of Fairfax, Virginia and (part) Seneca, Virginia-Maryland quadrangles: Open-File Report 50-11, 1 leaf : map ; 53 x 45 cm.,
- Berry, D. W., 1950, Ground-water data collected in the Missouri River Basin Units in Kansas during 1948: Open-File Report 50-54, 188 p., 13 figs.,
- Berry, Delmar W., 1950, Ground-water data collected in the Missouri River Basin Units in Kansas during 1949: Open-File Report 50-55, 121 p., 12 figs,
- Bradley, Wilmot H., 1950, Sediments and physical environment of the Sagadahoc Bay tidal flat, Georgetown, Maine: U.S. Geological Survey], Open-File Report 50-29, 23 p. ill., folded map ;28 cm.,
- Bramlette, M. N., 1950, The bauxite possibilities of Cuba: U.S. Geological Survey], Open-File Report 50-30, 5 p.;27 cm.,
- Brashears, M. L., Jr., 1950, Ground-water conditions in the vicinity of the Veterans Hospital, Castle Point, Dutchess County, New York: Open-File Report 50-1, 12 p., 1 fig.,
- Brashears, M. L., Jr., 1950, The piezometric surface of the Lloyd sand member of the Raritan formation, Long Island, New York, in 1947: Open-File Report 50-58, 3 plates; 1 map; 1 table,
- Brashears, M. L., Jr., 1950, Average daily withdrawals of water for public supply in Kings, Queens, and Nassau Counties, New York: Open-File Report 50-59, 1 p., 2 figs., 2 tables,
- Brashears, M. L., Jr., 1950, Ground-water conditions at the Veterans Facility, Castle Point, New York: Open-File Report 50-60, 5 p., 1 fig.,
- Brashears, M. L., Jr., 1950, Cooperative ground-water investigations in Massachusetts by the United States Geological Survey, 1938-50: Open-File Report 50-61, 9 p., 1 fig.,
- Broadhurst, W. L.; Ellsworth, C. E., 1950, Supplementary report on surface-water and ground-water surveys, Nueces Ruver Basin, Texas: Open-File Report 50-62, 9 p.,
- Buddington, A. F.; Leonard, B. F., 1950, Aeromagnetic and geologic maps of quadrangles in the Adirondack area: Open-File Report 50-114, 1:62500,
- Busch, E. A., 1950, A list of references on the occurrence, availability, and character of ground water in the Missouri River Basin: Open-File Report 50-63, 109 p.,
- Callaghan, Eugene, 1950, Geologic map of the Marysvale area, Utah: Open-File Report 50-17, 1 map,
- Castle, Robert O., 1950, Surficial geologic map of parts of Billerica, Wilmington, and Lexington quadrangles, Massachusetts: Open-File Report 50-31, 1 map,
- Cederstrom, D. J.; Wahrhaftig, Clyde; Barnes, F. F., 1950, Ground water in the vicinity of Healy and Homer, Alaska: Open-File Report 50-64, 5 p., 1 map,
- Cobb, Edward Huntington, 1950, Coal investigations on the southwest margin of the Homer district, Kenai coal field, Alaska: U.S. Geological Survey], Open-File Report 50-32, 11 p. folded map ;27 cm.,
- Conover, C. S., 1950, Ground-water conditions in the Rincon and Mesilla Valleys and adjacent areas in New Mexico: Open-File Report 50-66, 316 p., 11 pls., 12 figs.,
- Cooper, John Roberts, 1950, Western Molybdenum Company mine, Chewelah district, Stevens County, Washington: s.n., Open-File Report 50-20, 12 p.; 7 folded maps ;27 cm.,
- Currier, Louis W., 1950, Map showing status of geologic mapping and investigations in Massachusetts and Rhode Island under cooperative programs: Open-File Report 50-21, 1 map.,
- Cushman, R. V., 1950, Bibliography of publications relating to ground water in Connecticut: Open-File Report 50-67, 12 p., 1 map,
- Dempsey, William J., 1950, Five preliminary aeromagnetic maps of Pottsville and vicinity, Mullan and vicinity, Wallace and vicinity, Smelterville and vicinity, and Kellogg and vicinity, all in the Coeur d‘Alene mining district, Idaho: Open-File Report 50-8, 5 maps,
- Dennis, P. E., 1950, Geology and ground-water hydrology of the Lake Hefner area in Oklahoma County, Oklahoma: Open-File Report 50-68, 19 p., 2 figs.,
- Dobrovolny, Ernest; Miller, Robert D., 1950, Descriptive geology of Anchorage and vicinity, Alaska: U.S. G.P.O., Open-File Report 50-25, 15 p.; 4 charts, 2 folded maps ;29 cm.,
- Donnell, John Roswell; Cashion, W. B.; Zilbersher, W. M.; Gibson, W. C.; Wolman, M. G., 1950, Stratigraphic sections of the oil shale deposits in the western part of the Piceance Creek Basin, Garfield and Rio Blanco Counties, Colorado: U.S. Geological Survey], Open-File Report 50-16, [1 v.] :ill. ;29 cm.,
- Dover, T. B., 1950, Mineral constituents in water and their significance: Open-File Report 50-69, 6 p.,
- Duncan, Donald Cave; Belser, Carl, 1950, Geology and oil shale resources of the eastern side of the Piceance Creek Basin, Rio Blanco and Garfield counties, Colorado: [U.S. Geological Survey], Open-File Report 50-12, 17 p. ill. (some folded), 2 folded maps ;29 cm.,
- Eakin, T. E.; Robinson, T. W., 1950, Ground-water conditions in Whiskey Flat, Mineral County, Nevada: Open-File Report 50-70, 6 p.,
- Eddy, G. E.; Ferris, J. G., 1950, Relation of ground water to stream flow at Battle Creek, Michigan: Open-File Report 50-71, 2 p.,
- Ferris, J. G., 1950, Probable effects on ground-water resources from construction of the proposed Grand River cut-off channel west of Lansing, Michigan: Open-File Report 50-72, 6 p.,
- Fletcher, Mary H.; May, Irving, 1950, An improved fluorimeter for the determination of uranium in fluoride melts: Open-File Report 50-33, 10 p.; 6 leaves of plates : ill. ; 29 cm.,
- Fletcher, Mary H.; May, Irving; Slavin, Morris, 1950, A transmission fluorimeter for use in the fluorimetric method of analysis for uranium: Open-File Report 50-34, 14 p.: ill. ; 29 cm.,
- Graham, J. B., 1950, Contour map showing altitude of bedrock surface in southern Philadelphia, Pennsylvania: Open-File Report 50-73, 1 map,
- Guyton, W. F., 1950, Estimated use of ground water in the United States, 1945: Open-File Report 50-74, 5 p.; 7 figs.; tables included in Circular 117,
- Halpenny, L. C., 1950, Memorandum on results of well drilling at Kayenta, Navajo Indian Reservation, Navajo County, Arizona: Open-File Report 50-3, 4 p.,
- Halpenny, L. C.; Harshbarger, J. W.; Hem, J. D., 1950, Water-supply investigation of Sanastee area, Navajo Indian Reservation, San Juan County, New Mexico: Open-File Report 50-75, 26 p., 1 plate, 2 figs.,
- Havelka, D. E., 1950, Delivery of water in the Brazos River from Possum Kingdom Reservoir to Richmond, Texas, during August and September 1948: Open-File Report 50-76, 3 p., 2 plates,
- Hawkins, Harold Horatio; Richard, R. W., 1950, Geologic investigation at the site of the Post Office Building, Welch, West Virginia: [U.S. Geological Survey], Open-File Report 50-36, 22 p. ill., map, photos. ;29 cm.,
- Hebert, Remy; translated by Britt, S. E., 1950, Contribution to the study of the physico-chemical structure of clays: U.S. Geological Survey], Open-File Report 54-28, 45 p. ;29 cm.,
- Henderson, John R., 1950, Ten preliminary aeromagnetic maps covering Clark, Floyd, Hamilton, Hancock, Harrison, Jackson, Jefferson, Madison, Tipton, and Washington Counties, Indiana: Open-File Report 50-37, 10 maps.,
- Henderson, John R., 1950, Two preliminary aeromagnetic maps covering Johnson and Marion Counties, Indiana: Open-File Report 50-38, 2 maps.,
- Hershey, H. G., 1950, Some aspects of the ground-water future in Iowa: Open-File Report 50-77, 23 p.,
- Heyl, Allen V., Jr., 1950, The upper Mississippi Valley zinc-lead district; In two parts: I General structural relations of the upper Mississippi Valley zinc-lead district. II. The ore deposits of the upper Mississippi Valley zinc-lead district: Open-File Report 50-13, 271 p., 2 maps,
- Heyl, Allen Van, Jr.; Lyons, Erwin J.; Theiler, John J., 1950, Lead and zinc deposits of the Beetown area, Wisconsin: U.S. Geological Survey, Open-File Report 50-39, 17 p.; folded map ;27 cm.,
- Hobbs, S. W.; Wallace, R. E.; Griggs, Allan Bingham, 1950, Geology of the southern third of the Mullan and Pottsville quadrangles, Shoshone County, Idaho: U.S. Geological Survey], Open-File Report 50-40, 24 p.; folded map ;27 cm.,
- Irelan, Burdge, 1950, Chemical composition of Texas surface waters, 1949: Open-File Report 50-78, 67 p.,
- Johnson, Arthur, 1950, Reconnaissance of Lake Chackachamna, Alaska: Open-File Report 50-112, i, 8 leaves :ill. ;29 cm.,
- Jones, P. H., 1950, Memorandum on ground-water conditions in the Huachipato-Talcahuano area near Concepcion, Chile: Open-File Report 50-79, 5 p., 1 plate, 5 figs.,
- King, Philip Burke; Hayes, C. W., 1950, Geologic map of Murphy quadrangle, Tennessee-North Carolina: Open-File Report 50-2, 1 map,
- Klepper, Montis Ruhl, 1950, Forty-niner, King Solomon Ridge, and West End claims near Clancy, Jefferson County, Montana: Open-File Report 51-23, 3 p.: 1 map ; 27 cm.,
- Koschmann, Albert Herbert, 1950, Geologic maps of lead-zinc mines, Kokomo district, Summit County, Colorado: Open-File Report 50-19, 13 maps,
- Lawrence, F. F., 1950, Water power resources of Scenery Creek near Petersburg, Alaska: Open-File Report 50-113, 32 p.,
- LeFever, F. L.; Martin, R. O. R.; Bennett, R. R.; Otton, E. G., 1950, Water resources of the Cumberland area, Maryland-West Virginia: Open-File Report 50-80, 18 p.,
- Lohman, S. W., 1950, The relation of ground water to irrigation: Open-File Report 50-81, 9 p.,
- Lovering, Thomas Seward; Tweto, Ogden L., 1950, Mine maps of Boulder tungsten district, Colorado: Open-File Report 50-41, 110 maps,
- Lusczynski, N. J., 1950, Salinity of ground water at sampling wells located in southeastern Nassau County, Long Island, New York: Open-File Report 50-82, 3 p.,
- Lusczynski, N. J., 1950, Withdrawal of ground water and pond water on Long Island from 1904 to 1949: Open-File Report 50-83, 3 p., 1 fig.,
- Lusczynski, N. J., 1950, Piezometric levels from 1948 through 1950 for wells screened in the Lloyd sand member of the Raritan formation on Long Island, New York: Open-File Report 50-84, 10 p.,
- Maynard, James E.; Linehan, Rev. Daniel, 1950, Geologic interpretations of seismic data for various locations in Braintree and Danvers, Massachusetts: Open-File Report 50-42, 5 p.,
- Maynard, James E.; Linehan, Rev. Daniel, 1950, Geologic interpretations of seismic data for various locations in Wakefield, Danvers, Shelburne and Sturbridge, Massachusetts: Open-File Report 50-43, 13 p.,
- Maynard, James E.; Linehan, Rev. Daniel, 1950, Geologic interpretation of seismic data, Lancaster, Massachusetts, relocation of Route 2, Stations 138-155: Open-File Report 50-44, 4 p.,
- Maynard, James E.; Linehan, Rev. Daniel, 1950, Geologic interpretation of seismic data, Topsfield, Massachusetts, relocation of Route 1, Stations 25-36: Open-File Report 50-45, 5 p.,
- Maynard, James E.; Linehan, Rev. Daniel, 1950, Geologic interpretation of seismic data for various locations in Harvard and Topsfield, Masachusetts: Open-File Report 50-46, 9 p.,
- Meuschke, J. L., 1950, Nine preliminary aeromagnetic maps covering Aitkin County and parts of Itasca, Kanabec, Koochiching, Mille Lacs, Pine, and St. Louis Counties, Minnesota: Open-File Report 50-47, 9 maps.,
- Meuschke, J. L., 1950, Three preliminary aeromagnetic maps of eastern St. Louis County, Minnesota: Open-File Report 50-48, 3 maps.,
- Morris, D. A.; Durum, W. H., 1950, Progress report on the geology and ground-water hydrology of the Riverton Irrigation Project, Wyoming: Open-File Report 50-85, 108 p., 4 plates, 12 figs.,
- Nace, Raymond L.; Fader, Stuart Wesley, 1950, Records of wells on Rathdrum Prairie, Bonner and Kootenai Counties, Northern Idaho: U.S. Dept. of the Interior, Geological Survey, Open-File Report 51-19, i, 50 p. :maps (fold.) ;27 cm.,
- Nelson, W. B.; Lofgren, B. E., 1950, Progress report on ground-water investigation in Ashley Valley, Uintah County, Utah: Open-File Report 50-86, 5 p., 3 figs.,
- Newcomb, R. C.; Sceva, J. E.; Stromme, Olaf, 1950, Ground-water resources of western Whatcom County, Washington: Open-File Report 50-7, 134 p.; 11 plates,
- Overbeck, R. M., 1950, Ground-water resources of the Mt. Savage area, Maryland: Open-File Report 50-87, 128 p., 1 fig.,
- Paulsen, C. G., 1950, Water supply of the United States: Open-File Report 50-89, 4 p.,
- Paulsen, C. G., 1950, Water-resources investigations in the United States: Open-File Report 50-90, 5 p.,
- Paulsen, C. G.; Hastings, W. W., 1950, Water supplies for industry: Open-File Report 50-88, 15 p., 4 figs.,
- Phoenix, D. A., 1950, Ground-water in the Austin area, Lander County, Nevada: Open-File Report 50-91, 21 p.,
- Raup, Hugh Miller; Denny, Charles Storrow, 1950, Photo-interpretation of vegetation along the southern part of the Alaska Highway; its use as an indicator of the kind of ground: U.S. Geological Survey], Open-File Report 50-5, ii, 95 p., folded chart, photos ;28 cm.,
- Richardson, R. M., 1950, List of references pertaining to electrical well logging: Open-File Report 50-92, 29 p.,
- Roberts, C. M., 1950, Chloride content of water from wells screened in the Lloyd sand member of the Raritan formation on Long Island, New York: Open-File Report 50-93, 19 p.,
- Ruppel, Edward Thompson, 1950, Geology of the Limestone Hills, Broadwater County, Montana: s.n., Open-File Report 50-14, 99 p.; map, port. ;27 cm.,
- Sayre, A. N., 1950, Water resources of the United States: Open-File Report 50-95, 10 p.,
- Schlocker, Julius, 1950, Collected logs of borings in San Francisco area, a continued compilation of boring data: Open-File Report 50-49, NA,
- Siebenthal, Claude Ellsworth; Mesler, R. D., 1950, Geologic map of the Wyandotte quadrangle, northeastern Oklahoma and southwestern Missouri: Open-File Report 50-50, 1 map.,
- Sims, P. K., 1950, Geology of the Dover magnetite district, New Jersey: U.S. Geological Survey, Open-File Report 50-15, a-j, 224 p. ill., maps ;27 cm.,
- Sinnott, Allen, 1950, Additional water wells at Fort Belvoir, Virginia: Open-File Report 50-96, 7 p., 2 plates,
- Snavely, Parke Detweiler, Jr., 1950, Correlation between test holes in the Centralia-Chehalis coal district, Washington: U.S. Geological Survey, Open-File Report 50-24, 3 p; folded chart ;29 cm.,
- Stallman, R. W., 1950, Tables of values of W(u) for several values of u[subscript]p and K: Open-File Report 50-97, 6 p.,
- Steven, Thomas August, 1950, Metamorphism and the origin of the granitic rocks in the Northgate district, Colorado: U.S. Geological Survey, Open-File Report 50-51, 112 p. ill., maps (2 folded) ;27 cm.,
- Swanson, Roger W., 1950, Geology of a part of the Virginia City and Eldridge quadrangles, Montana; A summary report: [s.n.], Open-File Report 51-4, 12 leaves :col. ill., col. map ;27 cm.,
- Swenson, H. A., 1950, Progress report--Chemical character of surface waters in the Devils Lake Basin, North Dakota: Open-File Report 50-98, 46 p., 4 plates, 19 figs., 15 tables,
- Thomas, H. E., 1950, Hydrologic reconnaissance of the Green River in Utah and Colorado: Open-File Report 50-99, 92 p., 1 plate, 4 figs.,
- Thompson, George Albert, Jr., 1950, Structural geology of the Terlingua quicksilver district, Texas: s.n., Open-File Report 50-9, 93 p. ill., maps (some folded) ;27 cm.,
- Thurston, W. R., 1950, Exploration of the Buckhorn Mica Pegmatite mine, Larimer County, Colorado: [U.S. Geological Survey], Open-File Report 50-22, 3 p.; 5 plans ;29 cm.,
- Trainer, Frank, 1950, Tables of well records in the Palmer-Wasilla region of the Matanuska Valley, Alaska: Open-File Report 50-100, Tables,
- translated by Sokoloff, V. P.; Hawkes, H. E., 1950, Selected Russian papers on geochemical prospecting for ores: United States Dept. of the Interior, Geological Survey, Open-File Report 48-21, v, 103 p. :ill. ;28 cm.,
- Trauger, F. D., 1950, Basic ground-water data in Lake County, Oregon: U.S. Geological Survey, Open-File Report 51-156, 287 p. (some folded) :ill., maps, plates ;28 cm.,
- Troxell, H. C.; Burgess, C. E., 1950, Second progress report on the cooperative investigation of springs and stream flow in the Tecolote Tunnel area of Santa Barbara County, California: Open-File Report 50-101, 156 p., 1 plate, 3 figs.,
- Troxell, H. C.; Poland, J. F., 1950, Some aspects of the water supply in the South Coastal Basin, California: Open-File Report 50-102, 14 p., 5 plates (to be issued as Circular 105),
- Van Tuyl, D. W., 1950, Memorandum on pumping test at Ambridge, Pennsylvania: Open-File Report 50-103, 11 p., 3 figs.,
- Vorhis, R. C., 1950, Progress report on the ground-water hydrology of the Medicine Lake-Grenora area, Missouri-Souris Irrigation Project, Montana amd North Dakota: Open-File Report 50-23, 88 p.; 4 plates, 1 fig.,
- Waring, G. A.; Bush, W. H., 1950, Progress report on the geology and ground-water hydrology of part of the Oahe Unit, James River Division, South Dakota: Open-File Report 50-104, 272 p., 5 plates, 10 figs.,
- Warren, M. A., 1950, Water levels in observation wells in Santa Barbara County, California, in 1948: Open-File Report 50-105, 57 p.,
- Whitcomb, H. A., 1950, Geologic reconnaissance in vicinity of water well 5 miles south of Gallup, McKinley County, New Mexico: Open-File Report 50-106, 3 p.,
- Whitcomb, H. A.; Halpenny, L. C.; Hem, J. D., 1950, Water-supply investigations of the Buell Park-Sawmill area, Navajo Indian Reservation, Apache County, Arizona: Open-File Report 50-107, 26 p., 1 plate,
- Whitcomb, H. A.; Repenning, C. A., 1950, Memorandum on location of proposed well 15 miles north of Crown Point, McKinley County, New Mexico: Open-File Report 50-10, 5 p.,
- Whitcomb, H. A.; Repenning, C. A., 1950, Memorandum on geologic reconnaissance of six sites for water wells, western part of Navajo Counties, Arizona: Open-File Report 50-108, 15 p., 1 fig.,
- Whitcomb, H. A.; Repenning, C. A., 1950, Memorandum on possibility of developing ground water for irrigation along Toc Chinlin Wash near Emmanuel Mission, Navajo Indian Reservation, Apache County, Arizona: Open-File Report 50-109, 3 p.,
- Willard, Max E.; Linehan, Rev. Daniel, 1950, Geologic interpretations of seismic data, Cheshire, Massachusetts, relocation of route 116, stations 7-135: Open-File Report 50-52, 44 p.,
- Wilson, H. D., Jr., 1950, Water levels in observation wells in Santa Barbara County, California, in 1949: Open-File Report 50-110, 53 p., 1 plate,
- Worts, G. F., Jr. and others, 1950, Progress report on the ground-water investigation in Solano County, California: Open-File Report 50-111, 50 p., 7 plates,
- Young, Kenneth B., 1950, A comparative study of mean-section and mid-section methods for computation of discharge measurements: U.S. Dept. of the Interior, Geological Survey, Water Resources Division, Open-File Report 53-277, 52 p,
