- Bateman, A. F., Jr., 1956, Geologic and structure contour map of the Fort Peck Indian Reservation and vicinity, Montana: IMAP 225, 1 map :col. ;on sheet 110 x 140 cm. in folder 30 x 24 cm.,
- Bramkamp, R. A.; Gierhart R. D.; Brown, G. F.; Jackson, R. O., 1956, Geographic map of the southern Tuwayq quadrangle, Kingdom of Saudi Arabia: IMAP 212-B, 1 map.,
- Bramkamp, R. A.; Gierhart, R. D.; Brown, G. F.; Jackson, R. O., 1956, Geology of the southern Tuwayq quadrangle, Kingdom of Saudi Arabia: IMAP 212-A, 1 map.,
- Condon, W. H., 1956, Photogeologic map of the Emery-8 quadrangle, Emery County, Utah: IMAP 177, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Castle Dale-16 quadrangle, Emery County, Utah: IMAP 124, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Kaiparowits Peak-1 quadrangle, Garfield County, Utah: IMAP 134, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Kaiparowits Peak-2 quadrangle, Garfield County, Utah: IMAP 135, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Kaiparowits Peak-7 quadrangle, Garfield County, Utah: IMAP 136, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Kanab SE quadrangle, Kane County, Utah, and Mohave and Coconino Counties, Arizona: IMAP 137, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Johnson SW quadrangle, Kane County, Utah, and Coconino County, Arizona: IMAP 164, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Lees Ferry SW quadrangle, Coconino County, Arizona: IMAP 189, 1 map.,
- Detterman, J. S., 1956, Photogeologic map of the Emmett Wash NE quadrangle, Coconino County, Arizona: IMAP 190, 1 map.,
- Detterman, J. S.; Platt, J. N., 1956, Photogeologic map of Elk Ridge-4 quadrangle, San Juan County, Utah: IMAP 151, 1 map.,
- Hackman, R. J., 1956, Photogeologic map of the Mount Peale-9 quadrangle, San Juan County, Utah, and Montrose and San Miguel Counties, Colorado: IMAP 157, 1 map ;58 x 46 cm. folded to 24 x 21 cm. in envelope 30 x 24 cm.,
- Hackman, R. J., 1956, Photogeologic map of Mount Peale-10 quadrangle, San Juan County, Utah: IMAP 158, 1 map.,
- Hackman, R. J., 1956, Photogeologic map of the Mount Peale-1 quadrangle, San Juan County, Utah, and Montrose County, Colorado: IMAP 165, 1 map ;58 x 45 cm. folded to 24 x 21 cm. in envelope 30 x 24 cm.,
- Hackman, R. J., 1956, Photogeologic map of the Mount Peale-4 quadrangle, San Juan County, Utah: IMAP 172, 1 map.,
- Hackman, R. J., 1956, Photogeologic map of the Mount Peale-6 quadrangle, San Juan County, Utah: IMAP 173, 1 map.,
- Hackman, R. J., 1956, Photogeologic map of the Mount Peale-8 quadrangle, San Juan County, Utah, and Montrose County, Colorado: IMAP 174, 1 map ;58 x 45 cm. folded to 28 x 21 cm. in envelope 30 x 24 cm.,
- Hackman, R. J., 1956, Photogeologic map of the Mount Peale-16 quadrangle, San Juan County, Utah, and San Miguel County, Colorado: IMAP 176, 1 map ;58 x 45 cm. folded to 28 x 21 cm. in envelope 30 x 24 cm.,
- Hackman, R. J., 1956, Photogeologic map of the Mount Peale-7 quadrangle, San Juan County, Utah: IMAP 183, 1 map.,
- Hackman, R. J., 1956, Photogeologic map of the Navajo Mountain-13 quadrangle, Kane and San Juan Counties, Utah, and Coconino County, Arizona: IMAP 184, 1 map.,
- Hackman, R. J., 1956, Photogeologic map of the Navajo Mountain-15 quadrangle, San Juan County, Utah, and Navajo County, Arizona: IMAP 185, 1 map.,
- Hackman, R. J.; Tolbert, G. E., 1956, Photogeologic map of Mount Peale-11 quadrangle, San Juan County, Utah: IMAP 159, 1 map.,
- Hansen, W. R.; Bonilla, M. G., 1956, Geology of the Manila quadrangle, Utah-Wyoming: IMAP 156, 1 map.,
- Hemphill, W. R., 1956, Photogeologic map of the Fredonia NW quadrangle, Mohave County, Arizona: IMAP 133, 1 map.,
- Hemphill, W. R.; Lewis, C. R., 1956, Photogeologic map of the Desert Lake-15 quadrangle, Emery County, Utah: IMAP 121, 1 map.,
- Kent, B. H., 1956, Photogeologic map of the Desert Lake-14 quadrangle, Emery County, Utah: IMAP 120, 1 map.,
- Lindvall, Robert M., 1956, Geology of the Kenilworth quadrangle, Montana: IMAP 129, 1 map.,
- Lindvall, Robert M., 1956, Geology of the Big Sandy quadrangle, Montana: IMAP 130, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Desert Lake-16 quadrangle, Emery County, Utah: IMAP 122, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Short Creek SW quadrangle, Mohave County, Arizona: IMAP 140, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Heaton Knolls NW quadrangle, Mohave County, Arizona: IMAP 143, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Lost Spring Mountain SE quadrangle, Mohave County, Arizona: IMAP 144, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Lost Spring Mountain NE quadrangle, Mohave County, Arizona: IMAP 145, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Lost Spring Mountain NW quadrangle, Mohave County, Arizona: IMAP 146, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Virgin SW quadrangle, Washington County, Utah: IMAP 147, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Virgin NW quadrangle, Washington County, Utah: IMAP 149, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of Short Creek SE quadrangle, Mohave County, Arizona: IMAP 153, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of Desert Lake-13 quadrangle, Emery County, Utah: IMAP 154, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Fredonia SW quadrangle, Mohave County, Arizona: IMAP 160, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Virgin NE quadrangle, Washington County, Utah: IMAP 161, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Bluff-3 quadrangle, San Juan County, Utah: IMAP 181, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Paria Plateau SE quadrangle, Coconino County, Arizona: IMAP 191, 1 map.,
- Marshall, C. H., 1956, Photogeologic map of the Jacob Lake NE quadrangle, Coconino County, Arizona: IMAP 194, 1 map.,
- Marshall, C. H.; Pillmore, C. L., 1956, Photogeologic map of the Short Creek NW quadrangle, Mohave County, Arizona: IMAP 141, 1 map.,
- McKee, Edwin D.; Oriel, Steven S.; Swanson, Vernon E.; MacLachlan, Marjorie E.; MacLachlan, James C.; Ketner, Keith B.; Goldsmith, June Waterman; Bell, Ruth Young; Jameson, Dolores J.; Imlay, Ralph W., 1956, Paleotectonic maps, Jurassic system: IMAP 175, 1 atlas (6 p., 9 folded leaves of plates) : ill. (some col.), maps (chiefly col.) ; 77 cm.,
- McQueen, Kathleen, 1956, Photogeologic map of the Lees Ferry SE quadrangle, Coconino County, Arizona: IMAP 169, 1 map.,
- McQueen, Kathleen, 1956, Photogeologic map of the House Rock Spring SE quadrangle, Coconino County, Arizona: IMAP 199, 1 map.,
- McQueen, Kathleen, 1956, Photogeologic map of the Paria Plateau NE quadrangle, Coconino County, Arizona: IMAP 228, 1 map.,
- Miller, C. F., 1956, Photogeologic map of the Elk Ridge-8 quadrangle, San Juan County, Utah: IMAP 126, 1 map.,
- Miller, C. F., 1956, Photogeologic map of the Elk Ridge-9 quadrangle, San Juan County, Utah: IMAP 127, 1 map.,
- Minard, J. P., 1956, Photogeologic map of the Paria Plateau SW quadrangle, Coconino County, Arizona: IMAP 171, 1 map.,
- Minard, J. P., 1956, Photogeologic map of the Paria Plateau NW quadrangle, Coconino County, Arizona: IMAP 182, 1 map.,
- Minard, J. P., 1956, Photogeologic map of the Emmett Wash NW quadrangle, Coconino County, Arizona: IMAP 192, 1 map.,
- Minard, J. P., 1956, Photogeologic map of the Tanner Wash NW quadrangle, Coconino County, Arizona: IMAP 193, 1 map.,
- Minard, J. P., 1956, Photogeologic map of the House Rock Spring NE quadrangle, Coconino County, Arizona: IMAP 198, 1 map.,
- Morris, R. H., 1956, Photogeologic map of the Shinarump NW quadrangle, Coconino County, Arizona: IMAP 139, 1 map.,
- Nelson, A. E.; Wiesnet, D. R.; Nelson, A. E., 1956, Geologic map of the Chateaugay quadrangle, New York: IMAP 168, 1 map.,
- Olson, A. B., 1956, Photogeologic map of the Tidwell-10 quadrangle, Emery County, Utah: IMAP 186, 1 map.,
- Olson, A. B., 1956, Photogeologic map of the Tidwell-11 quadrangle, Emery County, Utah: IMAP 227, 1 map.,
- Olson, A. B., 1956, Photogeologic map of the Navajo Mountain-1 quadrangle, San Juan County, Utah: IMAP 229, 1 map.,
- Orkild, P. P., 1956, Photogeologic map of the Woodside-13 quadrangle, Emery County, Utah: IMAP 123, 1 map.,
- Orkild, P. P., 1956, Photogeologic map of White Canyon-8 quadrangle, San Juan County, Utah: IMAP 150, 1 map.,
- Orkild, P. P., 1956, Photogeologic map of the White Canyon-7 quadrangle, San Juan County, Utah: IMAP 163, 1 map.,
- Orkild, P. P., 1956, Photogeologic map of the Emery-1 quadrangle, Emery County, Utah: IMAP 166, 1 map.,
- Orkild, P. P., 1956, Photogeologic map of the White Canyon-4 quadrangle, San Juan and Garfield Counties, Utah: IMAP 170, 1 map.,
- Orkild, P. P., 1956, Photogeologic map of the White Canyon-3 quadrangle, San Juan and Garfield Counties, Utah: IMAP 195, 1 map.,
- Patton, W. W., Jr.; Bickel, R. S., 1956, Geologic map and structure sections along part of the lower Yukon River, Alaska: IMAP 197, 1 map.,
- Patton, W. W.; Bickel, R. S., 1956, Geologic map and structure sections of the Shaktolik River area, Alaska: IMAP 226, 1 map.,
- Pillmore, C. L., 1956, Photogeologic map of the Springdale SE quadrangle, Kane County, Utah: IMAP 131, 1 map.,
- Pillmore, C. L., 1956, Photogeologic map of the Springdale SW quadrangle, Kane and Washington Counties, Utah, and Mohave County, Arizona: IMAP 132, 1 map.,
- Pillmore, C. L., 1956, Photogeologic map of the Kanab SW quadrangle, Kane County, Utah, and Mohave County, Arizona: IMAP 138, 1 map.,
- Pillmore, C. L., 1956, Photogeologic map of the Short Creek NE quadrangle, Mohave County, Arizona: IMAP 142, 1 map.,
- Pillmore, C. L., 1956, Photogeologic map of the Springdale NE quadrangle, Kane County, Utah: IMAP 148, 1 map.,
- Pillmore, C. L., 1956, Photogeologic map of the Virgin SE quadrangle, Washington County, Utah, and Mohave County, Arizona: IMAP 179, 1 map.,
- Pillmore, C. L., 1956, Photogeologic map of the Orderville Canyon NW quadrangle, Kane and Washington Counties, Utah: IMAP 188, 1 map.,
- Pillmore, C. L.; McQueen, Kathleen, 1956, Map of Salt Chuck area, Prince of Wales Island, Alaska, showing linear features as seen on aerial photographs: IMAP 230, 1 map.,
- Pillmore, C. L.; McQueen, Kathleen, 1956, Map of Hollis area, Prince of Wales Island, Alaska, showing linear features as seen on aerial photographs, Part 1: IMAP 231, 1 map.,
- Pillmore, C. L.; McQueen, Kathleen, 1956, Map of Hollis area, Prince of Wales Island, Alaska, showing linear features as seen on aerial photographs, part 2: IMAP 232, 1 map.,
- Pillmore, C. L.; Reed, J. C., Jr., 1956, Photogeologic map of the Elk Ridge-3 quadrangle, San Juan County, Utah: IMAP 125, 1 map.,
- Postel, A. W.; Wiesnet, D. R.; Nelson, A. E., 1956, Geologic map of the Malone quadrangle, New York: IMAP 167, 1 map.,
- Ray, R. G., 1956, Photogeologic map of the Orange Cliffs-13 quadrangle, Garfield County, Utah: IMAP 178, 1 map.,
- Ray, R. G., 1956, Photogeologic map of the Orange Cliffs-11 quadrangle, Wayne and Garfield Counties, Utah: IMAP 187, 1 map.,
- Sable, V. H., 1956, Photogeologic map of the Moab-15 quadrangle, Grand County, Utah: IMAP 128, 1 map.,
- Sable, V. H., 1956, Photogeologic map of Elk Ridge-5 quadrangle, San Juan County, Utah: IMAP 152, 1 map.,
- Sable, V. H., 1956, Photogeologic map of the Tidwell-2 quadrangle, Emery and Grand Counties, Utah: IMAP 162, 1 map.,
- Smith, J. F., Jr., 1956, Geology of the Cartersville and Hathaway quadrangles, Montana: IMAP 155, 1 map.,
- Tolbert, G. E., 1956, Photogeologic map of the Carlisle-1 quadrangle, San Juan County, Utah: IMAP 180, 1 map.,