Notes:Aylesboro Avenue

1816-02-24: Pittsburgh Gazette, p. 2 (Newspapers.com 96049366): "A Valuable Piece of Land, FOR SALE, ¶ CONTAINING about FIVE ACRES, situated on Squirrel Hill, about four miles and an half from Pittsburgh, in Pitt Township, adjoining lands of David Irwin and James Fleming. . . . ¶ Barny M'Ginty. ¶ February 10, 1815."

1841–1842: Source:Warrantee, plate 9: "David Irwin 148 A. 16½ P. & All. Warrant dated July 17, 1841. Surveyed August 25, 1841. Pat^d Jan. 10, 1842 to same P. 42. 431."

1851: Source:Sidney-neff shows "D. Irwin" on the east side of modern Shady Avenue somewhat to the south of Aylesboro Avenue.

1862: Source:Beers shows "D. Irwin (Squirrell Hill)"

1872: Source:Hopkins-1872, p. 67, shows land of Irwin estate. Also shows a road roughly in the location of modern Aylesboro Avenue.

1882: Source:Hopkins-1882 does not show the road from the 1872 atlas.

1885-02-06: Source:Ordinance-1884-1885-96 located Irwin Avenue from Shady Avenue to Dallas Avenue.

1885-03-17: Source:Ordinance-1884-1885-130 authorized the opening of Irwin Avenue from Shady Avenue to Dallas Avenue.

1886: Source:Diffenbacher-1886, p. 41: "[Irwin ave]., from Shady ave. [to Dallas] ave., 22d ward." The Historic Pittsburgh copy is partially obliterated, but the same entry appears in Source:Diffenbacher-1887, p. 38.

1890: Source:Hopkins-1890-4, plates 14, 15: Irwin Avenue drawn with dashed lines, full length from Forbes to Dallas.

1910-01-22: Source:Fifth-avenues-name: "Other changes agreed upon were: Irwin avenue, Twenty-second ward, to be called Aylesboro avenue; . . . ."

1910-04-05: Source:Ordinance-1909-1910-715: "Irwin av., from Dallas to Forbes, old 22d wd., changed to Aylesboro av., 14th wd."