'Entered according to Act of Congress in the year 1855 by J.H. Colton & Co. in the Clerk's Office of the Dist. Court of the U.S. for the South'n. Dist. of New York.' Scale [ca. 1:4,752,000. 1 in. to approx. 75 miles] (W 120°--W 102°/N 43°--N 32°). Shows natural features, and populated places, wagon route, proposed railroad routes and explorers' routes. Relief shown by hachures. Prime meridians: Greenwich and Washington.Hand colored. Atlas p. number in lower-right margin: 51. Decorative border. J.H. Colton & Co.

'Entered according to Act of Congress in the year 1865 by S. Augustus Mitchell, Jr. in the Clerk's office of the District Court of the U.S. for the Eastern District of Pennsylvania . Drawn and engraved by W.H. Gamble, Philadelphia.' Shows roads, overland telegraph route, and other features. Relief shown by hachures and spot heights. Prime meridians: Greenwich and Washington. Scale [ca. 1:2,787,840] (W 120°--W 109°/N 43°--N 36° 59?).

Scale [ca. 1:110,880. 1 in. to approx. 1.75 miles]. 'Bull. Geol. Soc. Am., Vol. 47. Longwell Pl. 4.' Published as plate 4 of Longwell's Geology of the Boulder Reservoir floor, Arizona-Nevada. Geological Society of America

'Cartography by W. C. Kainsinger, W.T. Taylor. Field mapping by K. R. Reed, G. Boyd. Typography by W. R. Williams.' 'Copyright by Automobile Club of Southern California. C-21351.' 'C-1352'--Panel. Index on verso. In lower right corner: 'Map number 1959.' Scale 1:415,210 (W 116°--W 114°/N 37°--N 35°). Relief shown by hachures and spot heights. Shows mines, ranches and springs. Not the same as the 1948 edition of this map. Cartographers', field mappers', typographers' names are different, and 2 out of 3 numbers on maps are different. Probably after 1947 as Boulder Dam has been changed to Hoover Dam, but before 1950 as Las Vegas Bombing and Gunnery Range has not been changed to Nellis Air Force Base. Automobile Club of Southern California.

Scale [ca. 1:274,349. 1 in. to approx. 4.33 miles] (W 114°54?--W 113°54?/N 36°36?--N 35°58?). 1 map ; 27 x 34 cm. United States Dept. of the Interior, Geological Survey

29 x 36 cm. Shows natural features, and populated places, wagon route, proposed railroad routes and explorers' routes. Relief shown by hachures. Prime meridians: Greenwich and Washington. "Entered according to act of Congress in the year 1855 by J.H. Colton & Co in the Clerk's Office of the District Court of the U.S. for the Southern District of New York." Hand colored. Atlas p. number in lower-right margin: 51. Decorative border. The geographic region of Southwest is referred to as the New Southwest. Original publisher: J.H. Colton .