Map of the Fort Ridgely & South Pass Road. To accompany the report of William H. Nobles, Superintendent, by Samuel A. Medary, Engr. 1858. T.S. Wagner's Lith., Philada. Drawn by John R. Key. (Sen. Ex. Doc. No. 36. Ho. Ex. Doc. No. 108 - 2nd Sess. 35 Cong.): Report of the Secretary of the Interior, communicating Reports upon the Pacific Wagon Roads constructed under the direction of that Department. By Albert H. Campbell, General Superintendent, &c. February 23, 1859. Senate. 35th Congress, 2d Session. Ex. Doc. No. 36