"Map Showing Routes of the River and Land Parties Engaged in Exploring the Grand Canon of the Colorado", Wheeler, George (Lt)

This is the map of Wheeler's epic journey in 1871 up the Colorado River from Camp Mohave (near Needles, Arizona) to Diamond Creek. Published in 1878, it shows the course of the Colorado River from the California line to about midway up the Grand Canyon. A table lists the camps and dates of the River party, each keyed to the map. Detailed geographic information makes this a valuable record of Western exploration.

References: Wheat [TMW] #1292.

Condition: A

Folding, as issued, with full margins. A little light marginal foxing, soft fold at lower left corner. Map image is very good.