Six maps of the United States, showing (1) the location of the battles during the American Revolution; (2) the US at the time of the Treaty of 1783 settling the Revolution; (3) Territorial acquistions from 1776 to 1876; (4) the Political Divisions in 1815 and (5) Political Divisions in 1850. A wonderful map commenorating the American Centennial.
O. W. Gray was a publishing firm based in Philadelphia. Later, they published as O. W. Gray & Son. They published atlases in the late nineteenth century. Gray's National Atlas was one of the most successful commercial ventures of the 1870s and one of the last to employ hand coloring on maps.