Source:Birmingham-borough-plan
From Pittsburgh Streets
"A plan showing the boundary of the Borough of Birmingham in Allegheny Co., Pa. as extended by a late Act of Assembly: Made for the Council of said Borough at the request of O. O. Gregg." Laid out Mar. 14, 1839; recorded Mar. 25, 1839, Plan Book 1, pp. 78–79. Allegheny County Recorder of Deeds 3778178.
