- Alpha, T. R.; Nelson, W. H., 1990, Geologic sketches of Many Glacier, Hidden Lake Pass, Comeau Pass, and Bears Hump Viewpoint, Waterton-Glacier International Peace Park, Alberta, Canada and Montana, United States: IMAP 1508-E, 8 views on 2 sheets ;sheets 94 x 81 cm. and 84 x 94 cm., folded in envelope 30 x 24 cm.,
- Anderson, J. J.; Rowley, P. D.; Blackman, J. T.; Mehnert, H. H.; Grant, T. C., 1990, Geologic map of the Circleville Canyon area, southern Tushar Mountains and northern Markagunt Plateau, Beaver, Garfield, Iron, and Piute counties, Utah: IMAP 2000, 1 map :col. ;55 x 44 cm., on sheet 83 x 107 cm., folded in envelope 30 x 24 cm.,
- Anderson, J. J.; Rowley, P. D.; Machette, M. N.; Decatur, S. H.; Mehnert, H. H., 1990, Geologic map of the Nevershine Hollow area, eastern Black Mountains, southern Tushar Mountains and northern Markagunt Plateau, Beaver and Iron counties, Utah: IMAP 1999, 1 map :col. ;55 x 44 cm., on sheet 83 x 104 cm., folded in envelope 30 x 24 cm.,
- Batson, R. M., 1990, Experimental digital shaded-relief maps of Arizona: IMAP 1821, 2 maps :1 col. ;sheets 94 x 64 cm. and 76 x 64 cm., folded in envelope 30 x 23 cm.,
- Boler, F. M.; Klein, D. P., 1990, Residual Bouguer gravity and interpretative maps of the Pueblo 1 degree by 2 degrees Quadrangle, south-central Colorado: IMAP 1419-B, 2 maps :col. ;44 x 70 cm., on sheets 66 x 104 cm. and 86 x 102 cm., folded in envelope 30 x 24 cm. +1 pamphlet (8 p. ; 28 cm.),
- Boler, F. M.; Klein, D. P., 1990, Residual aeromagnetic and interpretative maps of the Pueblo 1 degree by 2 degrees Quadrangle, south-central Colorado: IMAP 1419-C, 2 maps :col. ;44 x 70 cm., on sheets 68 x 102 cm. and 101 x 137 cm., folded in envelope 30 x 24 cm. +1 pamphlet (10 p. ; 28 cm.),
- Booth, D. B., 1990, Surficial geologic map of the Skykomish and Snoqualmie Rivers area, Snohomish and King counties, Washington: IMAP 1745, 1 map :col. ;111 x 75 cm., on sheet 127 x 81 cm., folded in envelope 30 x 24 cm. +1 sheet (66 x 46 cm.) + 1 pamphlet (22 p. ; 28 cm.),
- Braddock, W. A.; Cole, J. C., 1990, Geologic map of Rocky Mountain National Park and vicinity, Colorado: IMAP 1973, 1 map :col. ;97 x 85 cm., on sheet 106 x 142 cm., folded in envelope 30 x 24 cm. +1 sheet (58 x 76 cm.),
- Carrara, P. E., 1990, Surficial geologic map of Glacier National Park, Montana: IMAP 1508-D, 1 map :col. ;87 x 98 cm., on sheet 97 x 127 cm., folded in envelope 31 x 24 cm.,
- Condon, S. M., 1990, Geologic and structure contour map of the Southern Ute Indian Reservation and adjacent areas, southwest Colorado and northwest New Mexico: IMAP 1958, 1 map :col. ;49 x 116 cm., on sheet 84 x 122 cm., folded in envelope 30 x 24 cm.,
- Covington, H. R.; Weaver, J. N., 1990, Geologic map and profiles of the north wall of the Snake River Canyon, Bliss, Hagerman, and Tuttle quadrangles, Idaho: IMAP 1947-A, 1 map :col. ;sheet 101 x 122 cm., folded in envelope 30 x 24 cm.,
- Covington, H. R.; Weaver, J. N., 1990, Geologic map and profiles of the north wall of the Snake River Canyon, Pasadena Valley and Ticeska quadrangles, Idaho: IMAP 1947-B, 1 map :col. ;sheet 71 x 86 cm., folded in envelope 30 x 24 cm.,
- Covington, H. R.; Weaver, J. N., 1990, Geologic map and profiles of the north wall of the Snake River Canyon, Jerome, Filer, Twin Falls, and Kimberly quadrangles, Idaho: IMAP 1947-D, 1 map :col. ;sheet 96 x 134 cm., folded in envelope 30 x 24 cm.,
- Covington, H. R.; Weaver, Jean N., 1990, Geologic map and profile of the north wall of the Snake River Canyon, Eden, Murtaugh, Milner Butte, and Milner quadrangles, Idaho: IMAP 1947-E, 1 map :col. ;58 x 85 cm., on sheet 76 x 127 cm., folded in envelope 30 x 24 cm.,
- Cox, L. J., 1990, Map of potential tin resources in the White Mountain plutonic-volcanic suite in northern New Hampshire and Vermont: IMAP 2092, 1 map :col. ;55 x 37 cm., on sheet 103 x 123 cm., folded in envelope 30 x 24 cm.,
- Curtis, S. M.; Ellersieck, Inyo; Mayfield, C. F.; Tailleur, I. L., 1990, Reconnaissance geologic map of the De Long Mountains A-3 and B-3 quadrangles and parts of the A-4 and B-4 quadrangles, Alaska: IMAP 1929, 1 map :col. ;88 x 62 cm., on sheet 137 x 101 cm., folded in envelope 30 x 24 cm. +1 sheet (86 x 102 cm.),
- Curtis, S. M.; Ellersieck, Inyo; Mayfield, C. F.; Tailleur, I. L., 1990, Reconnaissance geologic map of the De Long Mountains A-1 and B-1 quadrangles and part of the C-1 Quadrangle, Alaska: IMAP 1930, 1 map :col. ;102 x 40 cm., on sheet 137 x 96 cm., folded in envelope 30 x 24 cm. +1 sheet (98 x 102 cm.),
- Day, W. C., 1990, Bedrock geologic map of the Rainy Lake area, northern Minnesota: IMAP 1927, 1 map :col. ;32 x 68 cm., on sheet 76 x 102 cm., folded in envelope 30 x 24 cm.,
- Day, W. C.; Southwick, D. L.; Schulz, K. J.; Klein, T. L., 1990, Bedrock geologic map of the International Falls 1 degree by 2 degrees Quadrangle, Minnesota, United States and Ontario, Canada: IMAP 1965-B, 1 map :col. ;45 x 59 cm., on sheet 61 x 104 cm., folded in envelope 30 x 24 cm.,
- Denson, N. M.; Macke, D. L.; Schumann, R. R., 1990, Geologic map and distribution of heavy minerals in Tertiary and uppermost Cretaceous rocks of the Buffalo 30‘ x 60‘ Quadrangle, Johnson and Campbell counties, Wyoming: IMAP 2022, 1 map :col. ;56 x 80 cm., on sheet 84 x 142 cm., folded in envelope 30 x 24 cm.,
- Denson, N. M.; Macke, D. L.; Schumann, R. R., 1990, Geologic map and distribution of heavy minerals in Tertiary and uppermost Cretaceous rocks of the Kaycee 30‘ x 60‘ Quadrangle, Johnson and Campbell counties, Wyoming: IMAP 2024, 1 map :col. ;56 x 80 cm., on sheet 83 x 142 cm., folded in envelope 30 x 24 cm.,
- Denson, N. M.; Macke, D. L.; Schumann, R. R.; Durrett, M. E., 1990, Geologic map and distribution of heavy minerals in Tertiary rocks of the Birney 30‘ x 60‘ Quadrangle, Big Horn, Rosebud, and Powder River counties, Montana: IMAP 2019, 1 map :col. ;56 x 78 cm., on sheet 81 x 132 cm., folded in envelope 30 x 24 cm.,
- Denson, N. M.; Macke, D. L.; Schumann, R. R.; Durrett, M. E., 1990, Geologic map and distribution of heavy minerals in Tertiary rocks of the Sheridan 30‘ x 60‘ Quadrangle, Wyoming and Montana: IMAP 2020, 1 map :col. ;56 x 79 cm., on sheet 84 x 142 cm., folded in envelope 30 x 24 cm.,
- Denson, N. M.; Macke, D. L.; Wheeler, Christine, 1990, Geologic map and distribution of heavy minerals in Tertiary and uppermost Cretaceous rocks of the Douglas 30‘ x 60‘ Quadrangle, Converse and Platte counties, Wyoming: IMAP 2027, 1 map :col. ;55 x 82 cm., on sheet 83 x 141 cm., folded in envelope 30 x 24 cm.,
- Dillinger, J. K., 1990, Geologic and structure contour maps of the Gallup 30‘ x 60‘ Quadrangle, McKinley County, New Mexico: IMAP 2009, 2 maps :col. ;55 x 90 cm., on sheets 76 x 140 cm. and 73 x 97 cm., folded in envelope 30 x 24 cm.,
- Drew, L. J.; Qingrun, Meng, 1990, Geologic map of the Bayan Obo area, Inner Mongolia, China: IMAP 2057, 1 map :col. ;51 x 73 cm., on sheet 73 x 110 cm., folded in envelope 30 x 24 cm.,
- Edwards, Kathleen; Batson, R. M., 1990, Experimental digital shaded-relief maps of Wyoming: IMAP 1846, 2 maps :1 col. ;sheets 76 x 67 cm. and 66 x 69 cm., folded in envelope 30 x 23 cm.,
- Edwards, Kathleen; Batson, R. M., 1990, Experimental digital shaded-relief maps of Utah: IMAP 1847, 2 maps :1 col. ;sheets 87 x 51 cm. and 76 x 51 cm., folded in envelope 30 x 23 cm.,
- Edwards, Kathleen; Batson, R. M., 1990, Experimental digital shaded-relief maps of California: IMAP 1848, 2 maps :1 col. ;sheets 120 x 102 cm., folded in envelope 30 x 23 cm.,
- Edwards, Kathleen; Batson, R. M., 1990, Experimental digital shaded-relief maps of Nevada: IMAP 1849, 2 maps :1 col. ;sheets 86 x 59 cm., folded in envelope 30 x 23 cm.,
- Edwards, Kathleen; Batson, R. M., 1990, Experimental digital shaded-relief maps of southwestern United States: IMAP 1850, 2 maps :1 col. ;sheets 69 x 87 cm., folded in envelope 30 x 23 cm.,
- Ellersieck, Inyo; Curtis, S. M; Mayfield, C. F.; Tailleur, I. L., 1990, Reconnaissance geologic map of the De Long Mountains A-2 and B-2 quadrangles and part of the C-2 Quadrangle, Alaska: IMAP 1931, 1 map :col. ;102 x 40 cm., on sheet 137 x 96 cm., folded in envelope 30 x 24 cm. +1 sheet (109 x 101 cm.),
- Frizzell, V. A., Jr.; Shulters, Jacqueline, 1990, Geologic map of the Nevada Test Site, southern Nevada: IMAP 2046, 1 map :col. ;83 x 67 cm., on sheet 107 x 145 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Valhalla Quadrangle of Callisto: IMAP 1887, 1 remote-sensing image ;37 x 59 cm., on sheet 69 x 66 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of Callisto: IMAP 2035, 3 remote-sensing images on 1 sheet ;33 cm. diam., 39 x 101 cm., sheet 99 x 107 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2036, 1 remote-sensing image ;61 x 49 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2037, 1 remote-sensing image ;61 x 49 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2038, 1 remote-sensing image ;61 x 52 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2039, 1 remote-sensing image ;61 x 52 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2040, 1 remote-sensing image ;62 x 52 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2042, 1 remote-sensing image ;61 x 49 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2043, 1 remote-sensing image ;61 x 49 cm., on sheet 97 x 56 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2044, 1 remote-sensing image ;61 x 49 cm., on sheet 97 x 56 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Hadriaca region of Mars: IMAP 2045, 1 remote-sensing image ;61 x 49 cm., on sheet 97 x 56 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Claritas region of Mars: IMAP 2060, 1 remote-sensing image ;61 x 55 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Claritas region of Mars: IMAP 2061, 1 remote-sensing image ;61 x 55 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Lempo Quadrangle of Callisto: IMAP 2062, 1 remote-sensing image ;sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Tyrrhena Patera region of Mars: IMAP 2063, 1 remote-sensing image ;61 x 57 cm., on sheet 97 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Tyrrhena Patera region of Mars: IMAP 2064, 1 remote-sensing image ;61 x 57 cm., on sheet 95 x 61 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of part of the Tyrrhena Patera region of Mars: IMAP 2065, 1 remote-sensing image ;61 x 57 cm., on sheet 97 x 64 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Gloi Quadrangle of Callisto: IMAP 2068, 1 remote-sensing image ;sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Vestri Quadrangle of Callisto: IMAP 2069, 1 remote-sensing image ;sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Gipul Catena region of Callisto: IMAP 2070, 1 remote-sensing image ;43 cm. diam., on sheet 75 x 52 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Vali quadrangle of Callisto: IMAP 2073, map,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Valfodr Quadrangle of Callisto: IMAP 2074, 1 remote-sensing image ;37 x 59 cm., on sheet 69 x 66 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Vidarr Quadrangle of Callisto: IMAP 2075, 1 remote-sensing image ;37 x 59 cm., on sheet 66 x 66 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Controlled photomosaic of the Njord Quadrangle of Callisto: IMAP 2076, 1 remote-sensing image ;37 x 59 cm., on sheet 69 x 66 cm., folded in envelope 30 x 24 cm.,
- Geological Survey (U.S.), 1990, Indexes of Mars topographic maps published by the U.S. Geological Survey, June 1, 1990: IMAP 2178, 6 maps on 1 sheet ;sheet 92 x 66 cm., folded in envelope 30 x 24 cm.,
- Hail, W. J., Jr.; Pipiringos, G. N., 1990, Geologic map of the lower Piceance Creek area, northwestern Colorado: IMAP 1936, 1 map :col. ;56 x 85 cm., on sheet 69 x 140 cm., folded in envelope 30 x 24 cm.,
- Hinrichs, E. N.; Kent, B. H.; Pierce, F. W., 1990, Bedrock geologic map and coal sections in the Buffalo 30‘ x 60‘ Quadrangle, Johnson and Campbell counties, Wyoming: IMAP 1923-A, 1 map :col. ;55 x 80 cm., on sheet 104 x 107 cm., folded in envelope 30 x 24 cm.,
- Johnson, E. A.; Pierce, F. W.; Sigleo, W. R., 1990, Stratigraphic cross section showing upper Paleocene coal-bearing rocks of the Tongue River member of the Fort Union Formation in the Piney Canyon SE Quadrangle, Weston County, southeastern Powder River basin, Wyoming: IMAP 2012, 1 section ;sheet 96 x 122 cm., folded in envelope 30 x 24 cm.,
- Ketner, K. B., 1990, Geologic map of the Elko Hills, Elko County, Nevada: IMAP 2082, 1 map :col. ;72 x 57 cm., on sheet 92 x 84 cm., folded in envelope 30 x 24 cm.,
- Ketner, K. B.; Ross, R. J., Jr., 1990, Geologic map of the northern Adobe Range, Elko County, Nevada: IMAP 2081, 1 map :col. ;58 x 80 cm., on sheet 84 x 127 cm., folded in envelope 30 x 24 cm.,
- King, J. S.; Scott, D. H., 1990, Geologic map of the Beethoven Quadrangle of Mercury: IMAP 2048, 1 map :col. ;x cm., on sheet x cm., folded in envelope 30 x 24 cm.,
- Kuntz, M. A.; Rowley, P. D.; MacLeod, N. S., 1990, Geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington: IMAP 1950, 4 maps on 2 sheets :col. ;89 x 75 cm. and 79 x 32 cm., on sheets 101 x 137 cm. and 94 x 122 cm., folded in envelope 30 x 24 cm.,
- Luedke, R. G.; Koeppen, R. P.; A., Mario Flores; Espinosa, Alfredo O., 1990, Reconnaissance geologic map of the Morococala volcanic field, Bolivia: IMAP 2014, 1 map :col. ;74 x 53 cm., on sheet 107 x 79 cm., folded in envelope 30 x 23 cm.,
- Macke, D. L.; Schumann, R. R., 1990, Geologic map and distribution of heavy minerals in Tertiary and uppermost Cretaceous rocks of the Recluse 30‘ x 60‘ Quadrangle, Campbell and Crook counties, Wyoming: IMAP 2021, 1 map :col. ;56 x 80 cm., on sheet 86 x 137 cm., folded in envelope 30 x 24 cm.,
- Malde, H. E., 1990, Geologic profiles of the canyon walls of the Snake River, from Sinker Creek to Guffey Butte, Idaho: IMAP 2096, 1 map and 2 profiles on 1 sheet :col. ;sheet 112 x 66 cm., folded in envelope 30 x 24 cm.,
- Maldonado, Florian, 1990, Geologic map of the northwest quarter of the Bullfrog 15-minute Quadrangle, Nye County, Nevada: IMAP 1985, 1 map :col. ;58 x 46 cm., on sheet 80 x 105 cm., folded in envelope 30 x 24 cm.,
- Maldonado, Florian; Hausback, B. P., 1990, Geologic map of the northeast quarter of the Bullfrog 15-minute Quadrangle, Nye County, Nevada: IMAP 2049, 1 map :col. ;58 x 46 cm., on sheet 87 x 102 cm., folded in envelope 30 x 24 cm.,
- Mark, R. K.; Aitken, D. S., 1990, Shaded-relief topographic map of San Mateo County, California: IMAP 1257-K, 1 map :col. ;110 x 68 cm., on sheet 127 x 76 cm., folded in envelope 30 x 24 cm.,
- McLaughlin, R. J.; Ohlin, H. N.; Thormahlen, D. J.; Jones, D. L.; MIller, J. W.; Blome, C. D., 1990, Geologic map and structure sections of the Little Indian Valley-Wilbur Springs geothermal area, northern Coast Ranges, California: IMAP 1706, 1 map :col. ;115 x 90 cm., on sheet 130 x 96 cm., folded in envelope 30 x 24 cm. +1 sheet (97 x 121 cm.),
- McLellan, M. W.; Biewick, L. H., 1990, Geologic map of the Three Bar Ranch Quadrangle, Montana and Wyoming: IMAP 2016, 1 map :col. ;58 x 41 cm., on sheet 74 x 63 cm., folded in envelope 30 x 24 cm.,
- McLellan, M. W.; Biewick. L. R.; Molnia, C. L.; Pierce, F. W., 1990, Cross sections showing the reconstructed stratigraphic framework of Paleocene rocks and coal beds in the northern and central Powder River basin, Montana and Wyoming: IMAP 1959-A, 1 map :col. ;100 x 73 cm., on sheet 117 x 93 cm., folded in envelope 30 x 24 cm. +1 sheet (100 x 143 cm.),
- Mytton, J. W.; Williams, P. L.; Morgan, W. A., 1990, Geologic map of the Stricker 4 Quadrangle, Cassia County, Idaho: IMAP 2052, 1 map :col. ;60 x 43 cm., on sheet 74 x 71 cm., folded in envelope 30 x 23 cm.,
- Nichols, D. J.; Bryant, Bruce, 1990, Geologic map of the Salt Lake City 30‘ x 60‘ Quadrangle, north-central Utah, and Uinta County, Wyoming: IMAP 1944, 1 map :col. ;55 x 85 cm., on sheet 105 x 144 cm., folded in envelope 30 x 24 cm. +1 sheet (71 x 92 cm.),
- Nowlan, G. A.; Howd, F. H.; Canney, F. C.; Domenico, J. A., 1990, Maps showing the distribution of chromium, molybdenum, and uranium in stream sediments, Sherbrooke and Lewiston 1 degree by 2 degrees Quadrangles, Maine, New Hampshire, and Vermont: IMAP 1898-A, 3 maps on 2 sheets :col. ;89 x 64 cm., sheets 104 x 137 cm., folded in envelope 30 x 24 cm.,
- Nowlan, G. A.; Howd, F. H.; Canney, F. C.; Domenico, J. A., 1990, Maps showing the distribution of copper, lead, and zinc in stream sediments, Sherbrooke and Lewiston 1 degree by 2 degrees Quadrangles, Maine, New Hampshire, and Vermont: IMAP 1898-B, 3 maps on 2 sheets :col. ;89 x 64 cm., sheets 104 x 137 cm., folded in envelope 30 x 24 cm.,
- Nowlan, G. A.; Howd, F. H.; Canney, F. C.; Domenico, J. A., 1990, Maps showing the distribution of tin, tungsten, arsenic, gold, and silver in nonmagnetic heavy-mineral concentrates derived from stream sediments, Sherbrooke and Lewiston 1 degree by 2 degrees Quadrangles, Maine, New Hampshire, and Vermont: IMAP 1898-C, 3 maps on 2 sheets :col. ;89 x 64 cm., sheets 104 x 127 cm. and 104 x 137 cm., folded in envelope 30 x 24 cm.,
- Owens, J. P., 1990, Geologic map of the Cape Fear region, Florence 1 degree by 2 degrees Quadrangle and northern half of the Georgetown 1 degree by 2 degrees Quadrangle, North Carolina and South Carolina: IMAP 1948-A, 1 map :col. ;66 x 78 cm., on sheet 89 x 137 cm., folded in envelope 30 x 24 cm. +1 sheet (91 x 127 cm.),
- Owens, J. P.; Grosz, A. E.; Fisher, J. C., 1990, Aeroradiometric map and geologic interpretation of part of the Florence and Georgetown 1 degree by 2 degrees Quadrangles, South Carolina: IMAP 1948-B, 1 map :col. ;58 x 55 cm., on sheet 97 x 130 cm., folded in envelope 30 x 24 cm.,
- Pearson, R. C.; Hanna, W. F.; James, H. L.; Loen, J. S.; Moll, S. H.; Ruppel, E. T.; Trautwein, C. M., 1990, Map showing mineral resource assessment for silver, cobalt, and base metals in Proterozoic sedimentary rocks and for iron, chromium, nickel, talc, chlorite, gold, and graphite in Archean crystalline rocks, Dillon 1 degree by 2 degrees Quadrangle, Idaho and Montana: IMAP 1803-D, 1 map :col. ;44 x 63 cm., on sheet 96 x 117 cm., folded in envelope 30 x 24 cm.,
- Personius, S. F., 1990, Surficial geologic map of the Brigham City segment and adjacent parts of the Weber and Collinston segments, Wasatch Fault Zone, Box Elder and Weber counties, Utah: IMAP 1979, 2 maps on 1 sheet :col. ;sheet 105 x 109 cm., folded in envelope 30 x 24 cm.,
- Pierce, F. W.; Johnson, E. A.; Molnia, C. L.; Sigleo, W. R., 1990, Cross sections showing coal stratigraphy of the southeastern Powder River basin, Wyoming: IMAP 1959-B, 2 maps on 1 sheet :col. ;73 x 56 cm. and 55 x 81 cm., sheet 85 x 147 cm., folded in envelope 30 x 24 cm. +1 sheet (147 x 94 cm.),
- Planetary Geology Program (U.S.), 1990, Controlled photomosaic of the Asgard quadrangle of Callisto (Jc-3): IMAP 1888, 1 remote-sensing image ;on sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Planetary Geology Program (U.S.), 1990, Controlled photomosaic of the Hoenir quadrangle of Callisto (Jc-13): IMAP 2066, 1 remote-sensing image ;on sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Planetary Geology Program (U.S.), 1990, Controlled photomosaic of the Askr quadrangle of Callisto (Jc-5): IMAP 2067, 1 remote-sensing image ;on sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Planetary Geology Program (U.S.), 1990, Controlled photomosaic of the Ilma quadrangle of Callisto (Jc-12): IMAP 2071, 1 remote-sensing image ;on sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Planetary Geology Program (U.S.), 1990, Controlled photomosaic of the Adlinda quadrangle of Callisto (Jc-11): IMAP 2072, 1 remote-sensing image ;on sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Poppe, L. J.; Lane-Bostwick, C. M., 1990, Map showing weight percent of total nitrogen in the surficial sediments of the Mid-Atlantic continental margin, Cape Cod to Albemarle Sound: IMAP 1987-C, 1 map :col. ;67 x 79 cm., on sheet 86 x 112 cm., folded in envelope 30 x 24 cm.,
- Poppe, L. J.; Schlee, J. S.; Lane-Bostwick, C. M., 1990, Map showing weight percent of the total organic carbon in the surficial sediments of the Mid-Atlantic continental margin, Cape Cod to Albemarle Sound: IMAP 1987-B, 1 map :col. ;67 x 79 cm., on sheet 83 x 112 cm., folded in envelope 30 x 24 cm.,
- Purdy, T. L.; Rowan, L. C., 1990, Map showing analysis of linear features for mineral assessment in the Dillon 1 degree by 2 degrees Quadrangle, Idaho and Montana: IMAP 1803-B, 1 map :col. ;44 x 62 cm., on sheet 76 x 101 cm., folded in envelope 30 x 24 cm. +1 pamphlet (37 p. ; 28 cm.),
- Ratcliffe, N. M.; Burton, W. C.; Pavich, M. J., 1990, Orientation, movement history, and cataclastic rocks of Ramapo fault based on core drilling and trenching along the western margin of the Newark basin near Bernardsville, New Jersey: IMAP 1982, 2 maps on 1 sheet :col. ;28 x 31 cm. and 14 x 16 cm., sheet 101 x 144 cm., folded in envelope 30 x 24 cm.,
- Richter, D. H.; Lawrence, V. A.; Drewes, Harald; Young, T. H.; Enders, M. S.; Damon, P. E.; Thorman, C. H., 1990, Geologic map of the San Simon Quadrangle and parts of the Summit Hills and Mondel quadrangles, Cochise, Graham, and Greenlee counties, Arizona, and Hidalgo County, New Mexico: IMAP 1951, 1 map :col. ;58 x 60 cm., on sheet 76 x 137 cm., folded in envelope 30 x 24 cm.,
- Roehler, H. W.; Chisholm, W. A.; Schneider, G. B., 1990, Composite measured section showing nonopaque heavy minerals in sedimentary rocks of middle Proterozoic to late Tertiary age in the central Rocky Mountains, southwest Wyoming and northwest Colorado: IMAP 2145, 1 section ;sheet 104 x 142 cm., folded in envelope 30 x 24 cm.,
- Rowan, L. C.; Trautwein, C. M.; Purdy, T. L., 1990, Map showing the association of linear features with metallic mines and prospects in the Butte 1 degree by 2 degrees Quadrangle, Montana: IMAP 2050-B, 1 map :col. ;44 x 62 cm., on sheet 76 x 101 cm., folded in envelope 30 x 24 cm. +1 pamphlet (12 p. ; 28 cm.),
- Schneyer, J. D., 1990, Geologic map of Leppy Peak Quadrangle, Elko County, Nevada, and Toole County, Utah: IMAP 1938, 1 map :col. ;72 x 44 cm., on sheet 117 x 74 cm., folded in envelope 30 x 24 cm.,
- Sheridan, D. M.; Earhart, R. L.; Taylor, R. B.; Hasler, J. W.; edited by Earhart, R. L., 1990, Metallogenic map of stratabound exhalative and related occurrences in Colorado: IMAP 1971, 1 map :col. ;47 x 63 cm., on sheet 105 x 147 cm., folded in envelope 30 x 24 cm.,
- Sims, P. K., 1990, Precambrian basement map of the northern midcontinent, U.S.A.: IMAP 1853-A, 1 map :col. ;111 x 99 cm., on sheet 141 x 110 cm., folded in envelope 30 x 24 cm. +1 pamphlet (10 p. ; 28 cm.),
- Sims, P. K., 1990, Geologic map of Precambrian rocks of Eau Claire and Green Bay 1 degree by 2 degrees Quadrangles, central Wisconsin: IMAP 1925, 1 map :col. ;sheet 86 x 142 cm., folded in envelope 30 x 24 cm.,
- Sims, P. K., 1990, Geologic map of Precambrian rocks of Neillsville-Stevens Point area, Wisconsin: IMAP 1926, 1 map :col. ;56 x 120 cm., on sheet 99 x 142 cm., folded in envelope 30 x 24 cm.,
- Sims, P. K., 1990, Geologic map of Precambrian rocks of Iron Mountain and Escanaba 1 x 2 quadrangles, northeastern Wisconsin and northwestern Michigan: IMAP 2056, 1 map :col. ;44 x 79 cm., on sheet 104 x 104 cm., folded in envelope 30 x 24 cm.,
- Sims, P. K., 1990, Geologic map of Precambrian rocks, Marenisco, Thayer, and Watersmeet 15-minute quadrangles, Gogebic and Ontonagon counties, Michigan, and Vilas County, Wisconsin: IMAP 2093, 1 map :col. ;44 x 92 cm., on sheet 84 x 99 cm., folded in envelope 30 x 24 cm.,
- Smith, J. F., Jr.; Ketner, K. B.; Hernandez, G. X.; Harris, A. G.; Stamm, R. G.; Smith, M. C., 1990, Geologic map of the Summer Camp Quadrangle and part of the Black Butte Quadrangle, Elko County, Nevada: IMAP 2097, 1 map :col. ;58 x 87 cm., on sheet 81 x 107 cm., folded in envelope 30 x 23 cm.,
- State compilations by Holbrook, Drew F.; Gilliland, W. A.; Luza, K. V.; Pope, D. E.; Wermund, E. G.; Miller, R. A.; Bush, W. V.; Jensen, K. N.; Fishman W. D.; Edited and Integrated by Richmond, Gerald Martin; Fullerton, David S.; Weide, David L.; Digital Edition by Bush, Charles A., 1990, Quaternary geologic map of the Vicksburg 4° x 6° quadrangle, United States: U.S. Geological Survey IMAP 1420(NI-15), 1 Map: 46.48 x 29.9 inches; Map Text: 9 p.; Downloads Directory,
- State compilations by Pope, David E.; Gilliland, William A.; Wermund, E. G.; Edited and Integrated by Richmond, Gerald Martin; Weide, David L.; Moore, David W.; Digital edition by Bush, Charles A., 1990, Quaternary geologic map of the White Lake 4° x 6° quadrangle, United States: U.S. Geological Survey IMAP 1420(NH-15), 1 Map: 43.6 x 29.23 inches; Map Text: 7 p.; Downloads Directory,
- Steven, T. A.; Morris, H. T.; Rowley, P. D., 1990, Geologic map of the Richfield 1 degree by 2 degrees Quadrangle, west-central Utah: IMAP 1901, 3 maps on 1 sheet :col. ;44 x 70 cm. and 22 x 35 cm., on sheet 105 x 140 cm., folded in envelope 30 x 24 cm.,
- Strom, R. G.; Malin, M. C.; Leake, M. A., 1990, Geologic map of the Bach region of Mercury: IMAP 2015, 1 remote sensing image :col. ;46 cm. diam., on sheet 76 x 92 cm., folded in envelope 30 x 24 cm.,
- Swadley, W. C.; Hoover, D. L., 1990, Geologic map of the surficial deposits of the Yucca Flat area, Nye County, Nevada: IMAP 2047, 1 map :col. ;86 x 70 cm., on sheet 102 x 86 cm., folded in envelope 30 x 24 cm.,
- Swadley, W. C.; Huckins, H. E., 1990, Geologic map of the surficial deposits of the Skull Mountain Quadrangle, Nye County, Nevada: IMAP 1972, 1 map :col. ;58 x 46 cm., on sheet 71 x 76 cm., folded in envelope 30 x 24 cm.,
- Tysdal, R. G., 1990, Geologic map of the Sphinx Mountain Quadrangle and adjacent parts of the Cameron, Cliff Lake, and Hebgen Dam quadrangles, Montana: IMAP 1815, 1 map :col. ;79 x 48 cm., on sheet 91 x 124 cm., folded in envelope 30 x 24 cm.,
- Ward, A. W., 1990, Geologic map emphasizing the surficial deposits of the Farmington 30‘ x 60‘ Quadrangle, New Mexico and Colorado: IMAP 1978, 1 map :col. ;55 x 90 cm., on sheet 81 x 127 cm., folded in envelope 30 x 24 cm.,
- Weiss, M. P.; Witkind, I. J.; Cashion, W. B., 1990, Geologic map of the Price 30‘ x 60‘ Quadrangle, Carbon, Duchesne, Uinta, Utah and Wasatch counties, Utah: IMAP 1981, 1 map :col. ;55 x 85 cm., on sheet 104 x 147 cm., folded in envelope 30 x 24 cm.,
- Williams, P. L.; Mytton, J. W.; Covington, H. R., 1990, Geologic map of the Stricker 1 Quadrangle, Cassia, Twin Falls, and Jerome counties, Idaho: IMAP 2078, 1 map :col. ;58 x 43 cm., on sheet 71 x 74 cm., folded in envelope 30 x 23 cm.,
- Zimbelman, D. R.; Taylor, R. B., 1990, Trace-element geochemical maps of the western three-quarters of the Pueblo 1 degree x 2 degrees Quadrangle, south-central Colorado: IMAP 1419-D, 10 maps on 3 sheets :col. ;44 x 70 cm., sheets 104 x 147 cm., folded in envelope 30 x 24 cm.,
