- Burbank, Wilbur Swett, 1940, Structural control of ore deposition in the Uncompahgre district, Ouray County, Colorado, with suggestions for prospecting: U.S. Govt. Print. Off., Bulletin 906-E, iv, 189-265 p. :illus., maps ;24 cm.,
- Capps, Stephen Reid, 1940, Geology of the Alaska railroad region: U.S. Govt. print. off., Bulletin 907, vi, 201 p. incl. illus. (map) tables. :front., 9 pl. (incl. 3 fold. maps, in pocket) ;23 cm.,
- compiled by Ayvazoglou, W., 1940, Geophysical abstracts 96-99, January-December 1939: U.S. G.P.O., Bulletin 915, 195 p. ;24 cm.,
- compiled by Ayvazoglou, W., 1940, Geophysical abstracts, 100-103, January-December 1940. Geophysical abstracts 100, January-March 1940: Bulletin 925-A, 1-50 p.,
- compiled by Ayzavoglou, W., 1940, Geophysical abstracts 96-99, January-December, 1939. Geophysical abstracts 96, January-March 1939: Bulletin 915-A, 1-48 p.,
- compiled by Ayzavoglou, W., 1940, Geophysical abstracts 96-99, January-December, 1939. Geophysical abstracts 97, April-June 1939: Bulletin 915-B, 49-86 p.,
- compiled by Ayzavoglou, W., 1940, Geophysical abstracts 96-99, January-December, 1939. Geophysical abstracts 98, July-September 1939: Bulletin 915-C, 87-132 p.,
- compiled by Ayzavoglou, W., 1940, Geophysical abstracts 99, October-December 1939 (Nos. 5162 - 5298): Bulletin 915-D, 133-195 p.,
- Fries, Carl, Jr., 1940, Tin deposits of the Black Range, Catron and Sierra Counties, New Mexico a preliminary report: U.S. Govt. Print. Off., Bulletin 922-M, iii, 355-370 p. :maps (part fold. in pocket) ;24 cm.,
- Geological Survey (U.S.), 1940, Spirit leveling in South Carolina, 1896-1938. Part 2, Southern South Carolina: Bulletin 890-B, 457-766 p.,
- Geological Survey (U.S.), 1940, Transit traverse in Missouri, 1900-1937. Part 4, Northwestern Missouri, 1911-37: Bulletin 916-D, 441-563 p.,
- Geological Survey (U.S.), 1940, Transit traverse in Missouri, 1900-1937. Part 5, Southwestern Missouri, 1900-37: Bulletin 916-E, 565-732 p.,
- Geological Survey (U.S.), 1940, Transit traverse in Missouri, 1900-1937. Part 6, Northeastern Missouri, 1900-37: Bulletin 916-F, 733-868 p.,
- Geological Survey (U.S.), 1940, Transit traverse in Missouri, 1900-1937. Part 7, Central Missouri, 1902-37: Bulletin 916-G, 869-1024 p.,
- Geological Survey (U.S.), 1940, Transit traverse in Missouri, 1900-1937. Part 8, West-central Missouri, 1906-37: Bulletin 916-H, 1025-1156 p.,
- Goddard, Edwin N., 1940, Manganese deposits at Philipsburg, Granite County, Montana, a preliminary report: U.S. Govt. Print. Off., Bulletin 922-G, iv, 157-204 p. :illus., maps (part fold.) diagrs. (part fold.) tables ;24 cm.,
- Goodrich, H. B.; Kennedy, L. E.; Leatherock, Otto, 1940, Subsurface geology and oil and gas resources of Osage County, Oklahoma. Part 6, Township 28 north, ranges 10 and 11 east, and township 29 north, ranges 9 to 11 east: Bulletin 900-F, 209-236 p.,
- Kennedy, L. E.; McClure, J. D.; Jenkins, H. D.; Bass, N. W., 1940, Subsurface geology and oil and gas resources of Osage County, Oklahoma. Part 4, Townships 24 and 25 north, ranges 10 and 11 east: Bulletin 900-D, 131-171 p.,
- Kennedy, L. E.; Shamblin, W. E.; Leatherock, Otto; Bass, N. W., 1940, Subsurface geology and oil and gas resources of Osage County, Oklahoma. Part 5, Townships 26 and 27 north, ranges 10 and 11 east: Bulletin 900-E, 173-208 p.,
- Lang, Walter B.; King, Philip Burke; Bramlette, M. N.; McVay, Thomas Newkirk; Bay, Harry S.; Munyan, Arthur Claude; Mansfield, George Rogers, 1940, Clay investigations in the southern states 1934-35: U. S. Govt. print. off., Bulletin 901, x, 346 p. incl. illus., plans, tables, diagrs. :8 pl. (incl. 7 fold. maps (1 in pocket)) ;23 cm.,
- Lasky, Samuel Grossman, 1940, Manganese deposits in the Little Florida Mountains, Luna County, New Mexico, a preliminary report: U.S. Govt. Print. Off., Bulletin 922-C, ii, 55-73 p. :illus., maps (part fold.) ;24 cm.,
- Lemmon, D. M.; Dorr, John Van N., 1940, Tungsten deposits of the Atolia district, San Bernardino and Kern Counties, California: U.S. Govt. Print. Off., Bulletin 922-H, iv, 205-245 p. :maps (part fold.) diagrs. (part fold.) ;24 cm.,
- Lovering, Thomas Seward, 1940, Tungsten deposits of Boulder County, Colorado: U.S. Govt. Print. Off., Bulletin 922-F, iii, 135-156 p. :illus., maps ;24 cm.,
- McKnight, Edwin Thor, 1940, Geology of area between Green and Colorado rivers, Grand and San Juan Counties, Utah: U.S. G.P.O., Bulletin 908, v, 147 p. :ill., 2 folded maps ;23 cm.,
- Mertie, John Beaver, Jr., 1940, The Goodnews platinum deposits, Alaska: U.S. Govt. print. off., Bulletin 918, iv, 97 p. incl. illus., tables, diagr. :plates, fold. maps (2 in pocket) ;23 cm.,
- Peoples, Joe Webb; Howland, Arthur Lloyd, 1940, Chromite deposits of the eastern part of the Stillwater complex, Stillwater County, Montana: U.S. Govt. Print. Off., Bulletin 922-N, iv, 371-416 p. :illus., maps (1 fold. in pocket) ;24 cm.,
- Roberts, Ralph Jackson, 1940, Quicksilver deposits of the Bottle Creek District, Humboldt County, Nevada, a preliminary report: U.S. Govt. Print. Off., Bulletin 922-A, iii, 29 p. :maps (part fold.) diagrs. ;24 cm.,
- Roberts, Ralph Jackson, 1940, Quicksilver deposit at Buckskin Peak National mining district, Humboldt County, Nevada, a preliminary report: U.S. Govt. Print. Off., Bulletin 922-E, iii, 115-133 p. :illus., diagrs., maps (part fold.) ;24 cm.,
- Ross, Clyde Polhemus, 1940, Quicksilver deposits of the Mount Diablo district, Contra Costa County, California: U.S. Govt. Print. Off., Bulletin 922-B, iii, 31-54 p. :illus., fold. maps, tables ;24 cm.,
- Ross, Clyde Polhemus, 1940, Quicksilver deposits of the Mayacmas and Sulphur Bank districts, California, a preliminary report: U.S. Govt. Print. Off., Bulletin 922-L, iii, 327-353 p. :illus., maps (part fold. in pocket) ;24 cm.,
- Rynearson, Garn A.; Smith, Clay Taylor, 1940, Chromite deposits in the Seiad quadrangle, Siskiyou County, California: U.S. Govt. Print. Off., Bulletin 922-J, iv, 281-306 p. :illus., maps (part fold.) diagrs. (part fold.) ;24 cm.,
- Short, Maxwell Naylor, 1940, Microscopic determination of the ore minerals: U.S. Govt. print. off., Bulletin 914, viii, 314 p. :incl. illus., tab. 14 pl. (incl. fold. diagr.) ;23 cm.,
- Staack, John George, 1940, Spirit leveling in Utah, 1897-1938: U.S. Govt. Print. Off., Bulletin 912, 222 p.,
- Staack, John George, 1940, Triangulation in Utah, 1871-1934: U.S. Govt. Print. Off., Bulletin 913, iv, 170 p. :incl. illus. (maps) tables. pl. ;24 cm.,
- Staack, John George, 1940, Transit traverse in Missouri, 1900-1937. Part 2, South-central Missouri, 1908-37: Bulletin 916-B, 125-295 p.,
- Staack, John George, 1940, Transit traverse in Missouri, 1900-1937. Part 3, East-central Missouri, 1903-37: Bulletin 916-C, 297-439 p.,
- Thayer, Thomas Prence, 1940, Chromite deposits of Grant County, Oregon, a preliminary report: U.S. Govt. Print. Off., Bulletin 922-D, iv, 75-113 p. :fold. maps, diagrs. ;24 cm.,
- Wells, Francis Gerritt; Page, Lincoln R.; James, Harold Lloyd, 1940, Chromite deposits of the Pilliken area, of the Eldorado County, California: U.S. Govt. Print. Off., Bulletin 922-O, iv, 417-460 p. :maps (1 fold. in pocket) ;24 cm.,
- Wells, Francis Gerritt; Page, Lincoln R.; James, Harold Lloyd, 1940, Chromite deposits in the Sourdough area, Curry County and the Briggs Creek area, Josephine County, Oregon: U.S. Govt. Print. Off., Bulletin 922-P, iv, 461-496 p. :maps (part fold. in pocket) ;24 cm.,
- White, Donald Edward, 1940, Antimony deposits of a part of the Yellow Pine District, Valley County, Idaho, a preliminary report: U.S. Govt. Print. Off., Bulletin 922-I, iii, 247-279 p. :maps (part fold.) ;24 cm.,
- White, Donald Edward, 1940, Antimony deposits of the Wildrose Canyon area, Inyo County, California: U.S. Govt. Print. Off., Bulletin 922-K, iii, 307-325 p. :illus., fold. maps, diagrs. (part fold.) ;24 cm.,
