E.O.C. O. Lt. U.S.A. ; P.S. Duval's Lith steam Press Phila. Relief shown by hachures. Latitudinal and longitudinal lines. Coordinates approximate and based on Greenwich meridian. Bar scale on map given in "geographical Miles." Shows topography, vegetation, drainage, routes, etc. Descriptive text, e.g.: Gold found on these streams. From a map set including: Positions of the Upper and Lower gold Mines on the South Fork of the American River, California. July 20, 1848 -- Upper Mines.Nos. 1 & 8, [and on same sheet] Lower Mines or Mormon Diggings. No. 3. Appears in Polks' Message to Congress: U.S. Congress. House. Exec. doc. no. 1, 30th Cong., 2nd Sess., December 5, 1848 (Serial 537).
Creator:
Ord, Edward Otho Cresap, 1818-1883 and Duval, Peter S., 1804 or 1805-1886
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