- Allen, Howard E., 1966, Floods in Blue Island Quadrangle, Northeastern Illinois: Hydrologic Atlas 153, 1 col. map ;58 x 44 cm., on sheet 78 x 112 cm.,
- Allen, Howard E., 1966, Floods in Lake Calumet Quadrangle, Northeastern Illinois: Hydrologic Atlas 205, 1 col. map ;58 x 44 cm., on sheet 79 x 89 cm.,
- Allen, Howard E., 1966, Floods in Wauconda Quadrangle, Northeastern Illinois: Hydrologic Atlas 207, 1 col. map ;58 x 43 cm., on sheet 79 x 122 cm.,
- Allen, Howard E., 1966, Floods in Steger Quadrangle, Northeastern Illinois: Hydrologic Atlas 209, 1 col. map ;58 x 44 cm., on sheet 88 x 134 cm.,
- Allen, Howard E., 1966, Floods in Sugar Grove Quadrangle, Northeastern Illinois: Hydrologic Atlas 227, 1 col. map ;58 x 43 cm., on sheet 76 x 123 cm.,
- Allen, Howard E., 1966, Floods in Elburn Quadrangle, Northeastern Illinois: Hydrologic Atlas 229, 1 col. map ;58 x 43 cm., on sheet 78 x 100 cm.,
- Allen, Howard E.; Mycyk, Roman T., 1966, Floods in Manhattan Quadrangle, Northeastern Illinois: Hydrologic Atlas 211, 1 col. map ;58 x 44 cm., on sheet 78 x 125 cm.,
- Barksdale, H. C.; O'Bryan, Deric; Schneider, William J., 1966, Effect of drought on water resources in the Northeast: Hydrologic Atlas 243, 10 col. maps ;14 x 10 cm. on sheet 67 x 81 cm. folded to 30 x 24 cm.,
- Blakey, James F., 1966, Temperature of surface waters in the conterminous United States: Hydrologic Atlas 235, 3 col. maps ;81 x 104 cm.,
- Busby, Mark W., 1966, Annual runoff in the conterminous United States: Hydrologic Atlas 212, 3 col. maps on one sheet ;73 x 92 cm.,
- Cotter, R. D., 1966, Water resources of the Big Stone Lake Watershed, West-central Minnesota: Hydrologic Atlas 213, col. maps on 4 sheets ;86 x 70 cm. or smaller folded in envelope 30 x 24 cm.,
- Cotter, R. D.; Bidwell, L. E., 1966, Water resources of the Pomme de Terre River Watershed, West-central Minnesota: Hydrologic Atlas 220, col. maps on 4 sheets ;80 x 95 cm. or smaller folded in envelope 30 x 24 cm.,
- Cushing, E. M., 1966, Map showing altitude of the base of fresh water in coastal plain aquifers of the Mississippi embayment: Hydrologic Atlas 221, 1 map :col. ;62 x 75 cm.,
- Davis, R. W., 1966, Availability of ground water in the Fancy Farm quadrangle, Jackson Purchase region, Kentucky: Hydrologic Atlas 169, col. map ;92 x 112 cm.,
- Davis, R. W., 1966, Availability of ground water in the Lovelaceville quadrangle, Jackson Purchase region, Kentucky: Hydrologic Atlas 172, 1 map.,
- Emery, Philip A., 1966, Geohydrology of Saline County, Nebraska: Hydrologic Atlas 216, 1 map.,
- Fischer, William A.; Davis, Dan A.; Sousa, Theresa M., 1966, Fresh-water springs of Hawaii from infrared images: Hydrologic Atlas 218, 1 map ;30 x 27 cm. on sheet 85 x 134 cm. folded to 22 x 27 cm.,
- Hansen, Arnold J., 1966, Availability of ground water in the Crutchfield quadrangle, Jackson Purchase region, Kentucky-Tennessee: Hydrologic Atlas 167, 1 map.,
- Hansen, Arnold J., 1966, Availability of ground water in the Dublin quadrangle, Jackson Purchase region, Kentucky: Hydrologic Atlas 170, col. map ;90 x 112 cm.,
- Hansen, Arnold J., 1966, Availability of ground water in the Kentucky parts of the Joppa and Metropolis quadrangles, Jackson Purchase region, Kentucky: Hydrologic Atlas 171, 1 map.,
- Hart, D. L., 1966, Base of fresh ground water in southern Oklahoma: Hydrologic Atlas 223, 1 col. map in 2 sections ;101 x 146 cm., sections 68 x 73 cm. and 101 x 73 cm.,
- Hopkins, William B.; Tilstra, John R., 1966, Availability of ground water from the alluvium along the Missouri River in northeastern Montana: Hydrologic Atlas 224, 1 map.,
- Kister, Lester Ray, 1966, Maps showing fluoride content and salinity of ground water in the Willcox basin, Graham and Cochise Counties, Arizona: Hydrologic Atlas 214, 1 map on 2 sheets.,
- LaRocque, G. A., 1966, General availability of ground water and depth to water level in the Missouri River basin: Hydrologic Atlas 217, 1 col. map ;61 x 91 cm.,
- Lambert, T. William, 1966, Availability of ground water in parts of Hamlin and Paris Landing quadrangles, Jackson Purchase Region, Kentucky: Hydrologic Atlas 165, 1 map.,
- Lambert, T. William, 1966, Availability of ground water in the Heath quadrangle, Kentucky: Hydrologic Atlas 168, col. map ;92 x 120 cm.,
- Lambert, T. William, 1966, Availability of ground water in the La Center quadrangle, Jackson Purchase region, Kentucky: Hydrologic Atlas 173, 1 map.,
- Littlefield, W. M., 1966, Hydrology and physiography of the Salton Sea, California: Hydrologic Atlas 222, 1 map ;61 x 101 cm.,
- MacCary, L. M.; Davis, R. W., 1966, Availability of ground water in the Westplains quadrangle, Jackson Purchase region, Kentucky: Hydrologic Atlas 166, 1 map.,
- May, V. Jeff., 1966, Floods in River Forest Quadrangle, Northeastern Illinois: Hydrologic Atlas 206, 1 col. map ;58 x 43 cm., on sheet 82 x 114 cm.,
- May, V. Jeff., 1966, Floods in Normantown Quadrangle, Northeastern Illinois: Hydrologic Atlas 210, 1 col. map ;58 x 44 cm., on sheet 78 x 124 cm.,
- May, V. Jeff; Schafish, Robert J., 1966, Floods in Plainfield Quadrangle, Northeastern Illinois: Hydrologic Atlas 228, 1 col. map ;58 x 44 cm., on sheet 83 x 135 cm.,
- McGovern, Harold E.; Jenkins, Edward D., 1966, Ground water in Black Squirrel Creek Valley, El Paso County, Colorado: Hydrologic Atlas 236, 5 col. maps ;on sheet 76 x 103 cm., in envelope 30 x 24 cm.,
- Miller, Maynard M., 1966, Floods in Kahaluu area, Oahu, Hawaii: Hydrologic Atlas 239, 1 map. 30 x 43 in.,
- Noehre, Allen W., 1966, Floods in Mokena Quadrangle, Northeastern Illinois: Hydrologic Atlas 204, 1 col. map ;58 x 44 cm., on sheet 79 x 112 cm.,
- Noehre, Allen W.; Mycyk, Roman T., 1966, Floods in Palos Park Quadrangle, Northeastern Illinois: Hydrologic Atlas 145, 1 col. map ;58 x 44 cm., on sheet 84 x 102 cm.,
- Noehre, Allen W.; Mycyk, Roman T., 1966, Floods in Lake Zurich Quadrangle, Northeastern Illinois: Hydrologic Atlas 208, 1 col. map ;58 x 43 cm., on sheet 78 x 135 cm.,
- Noehre, Allen W.; Walter, Gerald L., 1966, Floods in Sag Bridge Quadrangle, Northeastern Illinois: Hydrologic Atlas 149, 1 col. map ;58 x 44 cm., on sheet 84 x 112 cm.,
- Noehre, Allen W.; Walter, Gerald L., 1966, Floods in Antioch Quadrangle, Northeastern Illinois: Hydrologic Atlas 226, 1 col. map ;58 x 43 cm., on sheet 80 x 112 cm.,
- Prescott, Glenn C., 1966, Surficial geology and availability of ground water in part of the lower Penobscot River basin, Maine: Hydrologic Atlas 225, 1 map.,
- Ruggles, Frederick H., 1966, Flood of October 8, 1962, on Bachman branch and Joes Creek at Dallas, Texas: Hydrologic Atlas 240, 30x43 in,
- Welder, George E.; McGreevy, L. J., 1966, Ground-water reconnaissance of the Great Divide and Wasahkie Basins and some adjacent areas, southwestern Wyoming: Hydrologic Atlas 219, 2 maps ;84 x 109 cm. --,
