58 x 46 cm., on sheet 79 x 91 cm., folded in envelope 30 x 24 cm. Relief shown by contours and spot heights. "Prepared in cooperation with the U.S. Atomic Energy Commission." "Base by U.S. Geological Survey, 1962." "Geology mapped in 1963." "Contour interval 20 feet." Includes text, 2 col. cross sections, quadrangle location map, and 1 index map. Original publisher: Interior, Geological Survey, Series: Geologic quadrangle map GQ, Scale: 1:24 000.

1 map in 21 sheets (14 plans, 7 profiles): col. ; 46 x 64 cm. Notes Relief shown by contours. Each sheet includes a key map. Surveys for individual sheets conducted 1919-23. Library has: Sheets I (2 copies), J, K, L, M, and N only. "Contour interval on land 50 feet." "Contour interval on river surface 5 feet." "Datum is mean sea level." "Mileage is measured from U. S. G. S. concrete gauge well opposite mouth of Paria River." "Topography by U. S. Reclamation Service." "Surveyed in 1919-23." Original publisher: U.S. Geological Survey, Scale: 1: 81,680.

52 x 110 cm. Relief shown by gradient tints, contours, and spot heights. Contour interval 1,000 feet. "Aeronautical data on this chart includes data received through Sept. 29, 1959." "Consult appropriate NOTAMS and Radio Facility Charts for supplemental data and current information." "Next edition is scheduled in approximately one year." "Base: Edition of May 1956. Revised Sept. 1958." "Lambert Conformal Conic Projection." "Standard Parallels 33° and 45°." "Elko compiled and printed at Washington, D. C. by the U. S. Coast and Geodetic Survey under authority of the Secretary of Commerce." "Principal sources: U. S. Geological Survey, U. S. Army Corps of Engineers, U. S. Air Force, U. S. Dept. of Agriculture, Civil Aeronautics Administration, and the U. S. Coast and Geodetic Survey." "Base: Edition of May 1956, revised Sept. 1958." "Detailed airport data and other useful information are printed on the back of this chart." Includes text, gradient tints scale and index to adjoining sheets. On verso: text, index map of sectional charts, inset maps of U.S. air defense identification zones and defense area, visual emergency signals, and charts. Original publisher: U.S. Coast and Geodetic Survey, Scale: 1:500,000.