Source:Iron-city-map
From Pittsburgh Streets
Map of Pittsburgh and Environs: Published for the monthly magazine entitled The Iron City, a compendium of facts concerning Pittsburgh and vicinity. 1867. In The Iron City: A compendium of facts concerning Pittsburgh and vicinity, for strangers and the public generally, George W. Pittock and Kinsey McFall, Pittsburgh, 1867, following p. 132 (Internet Archive ironcitycompendi01pitt).
