(West) Sketch Indicating the Advancement of the Surveys of the Public Lands and the Military Topographical and Geographical Surveys West of the Mississippi.
This is the large map of the West that sums its exploration. Shows dozens of explorers routes, as well as forts, railroad routes, and the situation of the Indian reservations at the time. While Wheeler included some of this same information on other progress maps for the surveys, this portrays it in a clear and legible manner that allows easier study. Notes the regions explored by King and Wheeler which are shaded. An amazing map that doesn't get mentioned in Wheat's studies, but is addressed by Cohen's Mapping the West.
Condition is very good with a few small repairs along the folds. Image size is approximately 32.5 x 44.5 (inches),