Topographical & township map of part of the State of Colorado, exhibiting the San Juan, Gunnison & California mining regions - 52eb6b4f68414fcad09d581691860b13

Advance sheet published by Louis Nell in early 1880 in preparation for a well-received final version he published later that year. The map portrays a detailed topographic view of a part of Colorado where mining activity was rapidly increasing.; 1:570,240