Source:Fleming-old-map-1
From Pittsburgh Streets
George T. Fleming. "History from an old map: William Masson's map of Pittsburgh in 1805 studied and explained—seagoing vessels outlined and old-time residences marked; the vacant tracts outside borough lines noted—a rugged topography indicated; the many ferries of the period." Pittsburgh Gazette Times, July 9, 1922, sec. 5, p. 2. Newspapers.com 85913400.
