From the Charles S. Sprague and Benjamin Gill Papers on Nevada Mining (MS-00570).

'Edition of Mar. 1908, reprinted 1951.' 'E.M. Douglas, geographer in charge; Topography and triangulation by R.H. Chapman, B.D. Stewart, J.E. Blackburn, and D.F.C. Moor. Surveyed in 1906-1907.' Scale 1:250,000 ; polyconic proj. (W 116°00--W 115°00/N 37°00--N 36°00). Relief shown by contours and spot heights. Title in lower-right corner: Nev.-Calif., Las Vegas. Contour interval 100 feet. Datum is mean sea level. U.S. Geological Survey

40 x 62 cm. Relief shown by hachures. Prime meridians: Greenwich and Washington. Page numbers at top: 58-59. "Entered according to act of Congress in the year 1864 by A. J. Johnson in the Clerk's Office of the District Court of the United States for the Southern District of New York." Original publisher: Johnson and Ward.

29 x 36 cm. 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 Dist. Office of the U.S. for the Southern. Dist. of New York." Hand colored. Decorative border. Atlas p. number in lower-right margin: 67. Shows routes of explorers, proposed railroad routes, wagon route, mail route, Indian reserves and mines. On verso: History and statistical view of Mexico. Original publisher: J.H. Colton.