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Detailed large format antique plan of Philadelphia, published by O.W. Gray.

The map is hand-colored by wards and showing streets, rail lines, parks, buildings, stations, islands, and a host of other details.

O.W. Gray Biography

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.