Source:Blair-est-plan-1
From Pittsburgh Streets
"Plan no. 1, Blair estate, Glenwood, 23rd Ward, Pgh.: Subdivision of lot 'A', as recorded in vol. 7, page 304." Laid out Sept. 1889; recorded Oct. 18, 1889, Plan Book 9, p. 121. Allegheny County Recorder of Deeds 3780216.
