This is an original 1915 trifold geological map with two vertical folds. This map shows part of the Overland Route which is part of the Union Pacific railroad line. This map shows the Union Pacific line from Hillside Wyoming to Rock Springs Wyoming. Unique to this map is that it includes a geographical chart that corresponds to letters on the map. The last image is an example of this folded trifold map.

This map measures about 13-1/2" x 9-1/8".

See the Item condition description for more information on this map. **