Colton, J. H. (Joseph Hutchins), 1800-1893Shows proposed and completed telegraph lines worldwide and detailed routes of varioius explorers. Includes table of distances. Relief shown by hatchures. Prime meridian: Washington.41 x 61 centimetersJPEGUMN_ALMA:9954598290001701engJ. H. Colton (New York)PublicP. Mc.D. Collins' proposed overland telegraph via Behring's Strait and Asiatic Russia to Europe, under Russian & British grants.MapsWorld1864University of Minnesota