From Pittsburgh Streets

"Edward Davisons plan of lots: Diagram of a plan of building lots situate in the Borough of Lawrenceville Allegheny County Penna laid out at the instance and request and under the direction of Edward Davison Esq by Heastings and Preiser civil engineers and land surveyors Pittsburgh September 1851." Laid out Sept. 1851; recorded Dec. 18, 1862, Plan Book 2, p. 204. Allegheny County Recorder of Deeds 3778462.