Source:Ewalt-plan-1850-lawrenceville
From Pittsburgh Streets
"Diagram of lots situate in Collins Twp. Allegheny Co. Pa. on the Butler Road adjoining the Borough of Lawrenceville: Laid out at the instance and request of Richard L. Ewalt, the proprietor." Laid out July 5, 1850; recorded Aug. 19, 1850, Plan Book 1, p. 177. Allegheny County Recorder of Deeds 3778265.
