Source:Birdsong
From Pittsburgh Streets
Shelley Birdsong. "Pittsburgh and Castle Shannon Railroad (Overbrook Trolley Line): HAER no. PA-410." Historic American Engineering Record, National Park Service, 1996. https://www.loc.gov/item/pa3483/.
Shelley Birdsong. "Pittsburgh and Castle Shannon Railroad (Overbrook Trolley Line): HAER no. PA-410." Historic American Engineering Record, National Park Service, 1996. https://www.loc.gov/item/pa3483/.