EXPLANATION
Irrigable Lands
Standing Timber
Area destitute of Timber on account of Fires
Rail Roads
Wagon Roads
Trails
Telegraph Lines
County Seats in Capital Letters.
DEPARTMENT OF THE INTERIOR U.S. GEOGRAPHICAL AND GEOLOGICAL SURVEY OF THE ROCKY MOUNTAIN REGION J. W. POWELL, IN CHARGE.
MAP OF THE UNITED STATES
EXHIBITING THE GRANTS OF LANDS MADE BY THE GENERAL GOVERNMENT TO AID IN THE CONSTRUCTION OF RAILROADS AND WAGON ROADS.
1878
For explanation see chapter on “Land Grants in aid of International Improvements”
[The base chart was engraved for the Statistical Atlas of the United States.]