- Adams, John Wagstaff; King, Robert Ugstad, 1950, Pitchblende occurrence at the Sunshine mine, Shoshone County, Idaho: Trace Elements Memorandum 29, 11 p. : ill., map ; 29 cm.; 3 figs.; 1 table,
- Anderson, F. J., 1950, Radiometric reconnaissance in the vicinity of Salmon, Idaho: Trace Elements Memorandum 26, 11 p., [1] folded leaf of plates : map ; 29 cm.,
- Gott, Garland Bayard, 1950, Uranium-bearing black shales and stylolite fillings in Spergen limestone, Bussen‘s quarry, Ste. Genevieve, Missouri: Trace Elements Memorandum 28, 11 p. : ill., map ; 29 cm.; 2 figs, 2 tables,
- Granger, Harry Clifford; Bauer, Herman Louis, 1950, The Eureka and happy landing (Cooper-Sands) groups of claims, Uintah County, Utah : a preliminary report: Trace Elements Memorandum 32, 31 p. : 29 cm.; 8 figs (2 in envelope); 3 tables,
- Granger, Harry Clifford; Beroni, E. P., 1950, Uranium occurrence in the White Canyon area, Utah: Trace Elements Memorandum 7, 32 p. : ill., maps; 5 figs (3 in pocket); 2 tables,
- Granger, Harry Clifford; Beroni, Ernest P., 1950, Cook Property, Jefferson County, Colorado: Trace Elements Memorandum 20, 6 p. : maps ; 29 cm,
- King, Robert U.; Granger, Harry Clifford, 1950, Torbernite occurrence at the Robineau claims, Clear Creek County, Colorado: Trace Elements Memorandum 24, 11 p. : map ; 29 cm.,
- King, Robert Ugstad, 1950, A radiometric traverse at the Apex Claims (Bates Creek), Gilpin County, Colorado: Trace Elements Memorandum 22, 5 p. : ill., map ; 29 cm.; 1 table,
- Sharp, William Neil, 1950, Recommendations for drilling the bastnaesite deposits, Birthday claims, San Bernardino County, California: Trace Elements Memorandum 35, 4 p. ; folded ill. in envelope,
- Vhay, John Stewart, 1950, Reconnaissance examination for uranium at six mines and properties in Idaho and Montana: Trace Elements Memorandum 30, 17 p. : ill., maps (folded maps in pocket); 29 cm.; 1 table,
- White, Walter Stanley, 1950, Radiometric scanning of collections of Keweenawan rocks of the Michigan copper district: Trace Elements Memorandum 34, 7 p. ; 29 cm.,
