Source:Knoxville-land-imp-co-brick-alley-plan
From Pittsburgh Streets
"Plan of subdivision of lots nos. 206, 207, 208, 209 and 251, 252, 253 & 254, and that portion of Diana Alley, vacated contiguous with said lots, in section D, in the plan of Knoxville Borough: Knoxville Land Improvement Co." Recorded Dec. 17, 1887, Plan Book 8, pp. 84–85. Allegheny County Recorder of Deeds 3779936.
