1850. Gunnison, J. W. (John Williams), 1812-1853, Preuss, Charles, 1803-1854, Stansbury, Howard, 1806-1863, and United States. Army. Corps of Engineers. Relief shown by hachures. Outline color. 1 map: hand col., dissected into 18 sections and mounted on linen; 71 x 174 cm, folded to 25 x 29 cm.