Notes:Ontario Street
From Pittsburgh Streets
1851-04-17: Source:Jp-smith-plan: "Ohio Ave"
1851: Source:Sidney-neff: Unlabeled, but drawn just to the north of "Phillip's Oil Cloth Fac"
1852: Source:Mcgowin-1852: Unlabeled. To the south, "J. & H. Phillips" and "Oil Cloth Factory"; to the north, J. P. Smith's plan of lots (unlabeled).
1862: Source:Beers: Unlabeled.
1872: Source:Hopkins-1872, pp. 100–101: Unlabeled.
1876: Source:Hopkins-1876, p. 52: "Ohio Ave"
