- Bailey, E. G., 1956, Index of surface-water records to September 30, 1955, part 12, Pacific slope basins in Washington and upper Columbia River basin: U.S. Dept. of the Interior, Geological Survey, Circular 392, 24 p. ;27 cm.,
- Bailey, E. G., 1956, Index of surface-water records to September 30, 1955, part 13, Snake River basin: U.S. Dept. of the Interior, Geological Survey, Circular 393, 19 p. ;27 cm.,
- Bailey, E. G., 1956, Index of surface-water records to September 30, 1955, part 14, Pacific slope basins in Oregon and lower Columbia River basin: U.S. Dept. of the Interior, Geological Survey, Circular 394, 19 p. ;27 cm.,
- Bailey, E. G., 1956, Index of surface-water records to September 30, 1955, Hawaii: Circular 395, 12 p. ;27 cm.,
- Bailey, E. G., 1956, Index of surface-water records to September 30, 1955, Alaska: U.S. Dept. of the Interior, Geological Survey, Circular 396, 10 p. ;27 cm.,
- Baker, John Augustus; Price, William Evans., 1956, Public and industrial water supplies of the eastern coal field region, Kentucky: [U.S. Geological Survey], Circular 369, iii, 63 p. :maps (2 fold. in pocket) tables. ;27 cm.,
- Crosthwaite, Emerson G.; Scott, R. C., 1956, Ground water in the North Side Pumping Division, Minidoka Project, Minidoka County, Idaho: U.S. Geological Survey, Circular 371, iii, 20 p. :ill. ;27 cm. + plate in back pocket.,
- Eddards, Miles LeRoy; Kister, L. R.; Scarcia, Glenn., 1956, Water resources of the New Orleans area, Louisiana: [U.S. Geological Survey], Circular 374, iv, 41 p. :maps (1 fold.) diagrs., tables.,
- Gatewood, J. S., 1956, Index of surface-water records to September 30, 1955, part 7, Lower Mississippi River basin: U.S. Dept. of the Interior, Geological Survey, Circular 387, 20 p. ;27 cm.,
- Gatewood, J. S., 1956, Index of surface-water records to September 30, 1955, part 8, Western Gulf of Mexico basins: U.S. Dept. of the Interior, Geological Survey, Circular 388, 25 p. ;27 cm.,
- Gatewood, J. S., 1956, Index of surface-water records to September 30, 1955, part 9, Colorado River basin: U.S. Dept. of the Interior, Geological Survey, Circular 389, 31 p. ;27 cm.,
- Gatewood, J. S., 1956, Index of surface-water records to September 30, 1955, part 10, The Great Basin: U.S. Dept. of the Interior, Geological Survey, Circular 390, 22 p. ;27 cm.,
- Gatewood, J. S., 1956, Index of surface-water records to September 30, 1955, part 11, Pacific slope basins in California: U.S. Dept. of the Interior, Geological Survey, Circular 391, 27 p. ;27 cm.,
- Geological Survey (U.S.), 1956, Floods of August 1955 in the Northeastern States: [U.S. Geological Survey], Circular 377, iii, 76 p. :maps (1 fold.) diagrs., tables. ;27 cm.,
- Geological Survey (U.S.), 1956, Floods of December 1955-January 1956 in Far Western States; peak discharges: U.S. Geological Survey, Circular 380, 15 p. :chiefly ill. ;28 cm.,
- Griffin, W. C.; Swenson, Herbert; Watkins, Frank A., 1956, Water resources of the Portland, Oregon, and Vancouver, Washington, area: U.S. Geological Survey, Circular 372, iv, 45 p. :ill. ;27 cm. + plates folded in pocket.,
- Knox, C. E., 1956, Index of surface-water records to September 30, 1955, part 1, North Atlantic slope basins: U.S. Dept. of the Interior, Geological Survey, Circular 381, 30 p. ;26 cm.26 cm.,
- Knox, C. E., 1956, Index of surface-water records to September 30, 1955, part 4, St. Lawrence River basin: U.S. Dept. of the Interior, Geological Survey, Circular 384, 15 p. ;27 cm.,
- Matthai, H. F., 1956, Index of surface-water records to September 30, 1955, part 5, Hudson Bay and upper Mississippi River basins: U.S. Dept. of the Interior, Geological Survey, Circular 385, 26 p. ;26 cm.,
- Matthai, H. F., 1956, Index of surface-water records to September 30, 1955, part 6, Missouri River basin: U.S. Dept. of the Interior, Geological Survey, Circular 386, 44 p. ;27 cm.,
- Robinson, W. H.; Powell, William James; Brown, Eugene; Corps of Engineers, U.S. Army, 1956, Water resources of the Mobile area, Alabama, with a section on salinity of the Mobile River: U.S. Geological Survey, Circular 373, iv, 45 p. :ill., maps ;27 cm. + plate folded in pocket.,
- Speer, Paul R., 1956, Index of surface-water records to September 30, 1955, part 3, Ohio River basin: U.S. Dept. of the Interior, Geological Survey, Circular 383, 28 p. ;27 cm.,
- Speer, Paul R.; Goodwin, A. B., 1956, Index of surface-water records to September 30, 1955, part 2, South Atlantic slope and eastern Gulf of Mexico basins: U.S. Dept. of the Interior, Geological Survey, Circular 382, 24 p. ;27 cm.,
- Swanson, Roger Warren; Cardwell, Louis Duncan; Sheldon, Richard Porter; Cheney, T. M., 1956, Stratigraphic sections of the phosphoria formation, 1953: [U.S. Geological Survey], Circular 375, iv, 30 p. :ill., maps ;27 cm.,
- Wilmoth, Benton M.; Randall, Lois Emily; Johnson, Arthur., 1956, Reports and maps of the Geological Survey released only in the open files, 1955: U.S. Dept. of the Interior, Geological Survey, Circular 379, 15 p. ;27 cm.,
