Detailed pair of City plans, from this scarce edition of Gray's Atlas of the United States. Colored by wards. Shows streets, buildings, railroads, and many other places of interest.
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.