5, p. 18-19. La Rue, E. C., 1916, Colorado River and its utilization: U.S. Geol. Survey Water-Supply Paper 395, 231 p. ____ 1925, Water power and flood control of Colorado River below Green River, Utah, with a forward by Hubert Work, Secretary of the Interior, p. 1-100. [App. A, A report on water supply, by E. C. La Rue and G. F. Holbrook, p. 101-123; app. B, A geologic report on the inner gorge of the Grand Canyon of Colorado River, by R. C. Moore, p. 125-171]: U.S. Geol. Survey Water-Supply Paper 556, 176 p. Lewis, R. Q., and Campbell, R. H., 1965, Geology and uranium deposits of Elk Ridge and vicinity, San Juan County, Utah: U.S. Geol. Survey Prof. Paper 474-B, 69 p. Lohman, S. W., 1965, The geologic story of Colorado National Monument: Colo. and Black Canyon Nat. History Assoc., 56 p. McKnight, E. T., 1940, Geology of area between Green and Colorado Rivers, Grand and San Juan Counties, Utah: U.S. Geol. Survey Bull. 908, 147 p. Mattox, R. B., 1968, Upheaval Dome, a possible salt dome in the Paradox Basin, Utah, _in_ Mattox, R. B., ed., Saline deposits: Geol. Soc. America Spec. Paper 88, p. 331-347. Mutschler, F. E., 1969, Labyrinth, Stillwater, and Cataract Canyons: River runners’ guide to the canyons of the Green and Colorado Rivers, with emphasis on geologic features, volume II: Denver, Colo., Powell Soc., Ltd., 79 p. Mutschler, F. E., and Hite, R. J., 1969, Origin of the Meander anticline, Cataract Canyon, Utah, and basement fault control of Colorado River drainage [abs.]: Geol. Soc. America, Rocky Mtn. Sec., 22nd Ann. Mtg., Salt Lake City, Utah, 1969, Abs. with Programs, pt. 5, p. 57-58. Newberry, J. S., 1861, Geological report, _in_ Ives, J. C., Report upon the Colorado River of the West: U.S. 36th Cong. 1st sess., S. Ex. Doc. and H. Ex. Doc. 90, pt. 3, 154 p. Newell, Maxine, 1970, Canyonlands—modern history: Naturalist, v. 21, Summer, Spec. Issue 2, p. 40-47. Newman, W. L., 1970, Geologic time: U.S. Geol. Survey, 20 p. Porter, Elliot, 1969, Down the Colorado, John Wesley Powell diary of the first trip through the Grand Canyon 1869: New York, E. P. Dutton & Co., 168 p. Powell, J. W., 1875, Exploration of the Colorado River of the West and its tributaries: Washington, D.C., 291 p. Rabbitt, M. C., 1969, John Wesley Powell: pioneer statesman of federal science, _in_ The Colorado River region and John Wesley Powell: U.S. Geol. Survey Prof. Paper 669, p. 1-21. Sharrock, F. W., 1966, An archeological survey of Canyonlands National Park: Utah Univ., Dept. Anthropology, Anthropol. Papers, Misc. Paper 83, p. 51-84. Stacy, J. R., 1962, Shortcut method for the preparation of