- Anderson, Frank J., 1950, Reconnaissance of some geologic formations in southeastern Idaho, western Wyoming, and northern Utah: Trace Elements Investigations 72, 5 leaves, 1 leaf of plates : map ; 29 cm.,
- Bell, Kenneth G.; Rogers, Allen S., 1950, Experimental gamma-ray logging of drill holes in the Calamity area, Mesa County, Colorado: Trace Elements Investigations 84, 11 p.: log folios, maps,
- Cater, F. W.; Craig, L. C.; Phoenix, D. A., 1950, Progress of geologic studies, Colorado Plateau Project: Trace Elements Investigations 110, 41 p.; 6 illus.,
- Conant, L. C.; Brown, Andrew; Hass, W. H., 1950, Chattanooga shale of the Eastern Highland Rim, Tennessee: Trace Elements Investigations 62, 94 p., 13 plates [some missing], 6 fig.,
- Fleischer, Michael, 1950, An introduction to the geochemistry of gadolinium: Trace Elements Investigations 128, 13 leaves : ill. ; 27 cm.,
- Fletcher, Mary Henry, 1950, A study of critical factors in the "direct" fluorimetric determination of uranium: Trace Elements Investigations 130, 40 p. : ill. ; 28 cm.,
- Frondel, Judith Weiss; Fleischer, Michael, 1950, A glossary of Uranium- and Thorium- bearing minerals: Trace Elements Investigations 103, 32 p.,
- Geological Survey (U.S.), 1950, Characteristics of radioactive carbonaceous and bituminous shales: Trace Elements Investigations 78, 23 p., 4 fig. [missing],
- Grimaldi, F. S.; Guttag, Norma S., 1950, Short routine direct method for the fluorimetric determination of uranium in phosphate rocks: Trace Elements Investigations 134, 8 leaves : ill. ; 29 cm.,
- Grimaldi, F. S.; Levine, Harry, 1950, The fluorometirc determination of aluminum in phosphate rock with 8-hydroxyquinoline: Trace Elements Investigations 60, 13 p., 5 fig.,
- Jaffe, Elizabeth B., 1950, Abstracts of the literature on synthesis of apatites and some related phosphates, Part I and Part II: Trace Elements Investigations 132, 86 p. : ill. ; 29 cm.,
- Killeen, P. L.; White, M. G., 1950, Short contributions to Alaskan trace element studies 1946 : Part II: Trace elements reconnaissance of the South Fork of Quartz Creek, northeastern Seward Peninsula, Alaska: Trace Elements Investigations 42-2, 21 p., 1 fig.,
- Klepper, M. R., 1950, Forty-Niner, King Solomon Ridge, and West End claims near Clancy in Jefferson County, Montana: Trace Elements Memorandum 31, 8 p.; 1 map,
- May, Irving.; Fletcher, Mary H., 1950, A battery-powered fluorimeter for the determination of uranium: Trace Elements Investigations 135, 9 leaves, [5] leaves of plates : ill. ; 29 cm.,
- McKelvey, V. F., 1950, Relation of uranium and phosphate in the Phosphoria formation: Trace Elements Investigations 77, 47 p., 21 fig.,
- McKelvey, Vincent Ellis, 1950, Potential by-product elements in the Phosphoria formation of the Western States: Trace Elements Investigations 131, 9 leaves ; 27 cm.,
- Moxham, R. M., 1950, Trace elements reconnaissance of the southern highway belt, south-central Alska: Trace Elements Investigations 48, 17 p., 2 fig.,
- Moxham, R. M., 1950, The occurrence of zeunerite in the Russian mountains, Alaska : interim report [Part 4]: Trace Elements Investigations 57-D, 9 p., 1 fig.,
- Moxham, Robert Morgan; Nelson, Arthur Edward, 1950, Trace elements reconnaissance in the Jakolof Bay area, southern Alaska: Trace Elements Investigations 74-A, 5 p., 1 fig.: map ; 29 cm.,
- Page, Lincoln Ridler, 1950, Beryllium in Colorado: Trace Elements Investigations 88, 9 p.,
- Robeck, R. C.; Brown, Andrew, 1950, Black shale investigations, Block 3, Tennessee: Trace Elements Investigations 63, 42 p., 9 photographic plates,
- Stern, T. W., 1950, A catalog of study material of radioactive minerals: Trace Elements Investigations 129, 80 p. ; 27 cm.,
- Thurston, R. H.; Chace, F. M., 1950, Tin, copper, and uranium at Majuba Hill, Nevada: Trace Elements Investigations 81-A, 15 p., 4 fig. ; maps,
- West, W. S.; Matzko, J. J., 1950, Shorter contributions to Alaskan trace elements studies for 1947 : Part I: Radiometric and mineralogic studies of the granitic complex in the Cape Nome area, Seward Peninsula, Alaska: Trace Elements Investigations 45-2, 12 p., 1 fig.,
- White, M. G., 1950, Trace elements reconnaissance in the lower Colleen River valley, upper Yukon Division, Alaska [Part 2]: Trace Elements Investigations 57-B, 5 p., 1 fig.,
- White, M. G.; Killeen, P. L., 1950, Shorter contributions to Alaskan trace elements studies for 1947 : Part I: Radioactivity and mineralogy of concentrates from the placers of Julian, Moore, and Candle Creeks, and the Cripple Creek Mountains, lower Yukon-Kuskokwim Highlands region, Alaska: Trace Elements Investigations 45-1, 11 p. 1 fig.,
- White, Mary G., 1950, Radioactivity and mineralogy of placer concentrates from the Fortymile district, Alaska: Trace Elements Investigations 57-A, 8 p., [2] folded leaves of plates : maps ; 29 cm.,
- White, Mary G., 1950, Examination for radioactivity in a copper-lode prospect on Ruby Creek, Kobuk River valley, Alaska: Trace Elements Investigations 76-A, 8 p., 2 fig. : maps ; 29 cm.,
- Wyant, Donald Gray; Beroni, Ernest P., 1950, Reconnaissance for trace elements in North Dakota and eastern Montana. Part 1. Geology and radioactivity. Part 2. Reserves and summary: Trace Elements Investigations 61, 29 p.,
