Old Pittsburgh Map

President Obama's affinity for Pittsburgh extends to the arts. For while he flew to NYC to see a play, Joe Turner's Come and Gone is set in Pittsburgh (in 1911).

In line with all things old and in the Pittsburgh way, here is a map found in the Library of Congress collection, with no exact date. The legend says "A Dot = 200 persons." Sometime around 1850?

Image Courtesy of the Frances Loeb Library, Graduate School of Design, Harvard University (via the Library of Congress online collection)