Notes:Columbus Avenue

1788: Source:Reserve-tract: Island Lane from Ferry Lane (Beaver Avenue) to Pasture Lane (Irwin Avenue).

1830: Source:Barbeau (also Source:Keyon): Island Lane appears in the upper left corner.

1852: Source:Mcgowin-1852: Washington Street west of Beaver Street (Avenue); Island Lane to the east. Part of Manchester; part of the north boundary of Allegheny from Sedgewick Street to Pasture Lane.

1862: Source:Beers: Washington Street west of Beaver Street (Avenue); Island Lane to the east.

1867: Source:Woods-1867: As Source:Mcgowin-1852.

1867-04-11: Source:Lgeo-manchester-annexation: Manchester annexed by Allegheny.

1867-04-24: "Meeting of Allegheny Councils," Pittsburgh Gazette, p. 1 (Newspapers.com 85568294): "Common Council. ¶ . . . ¶ Mr. McNeil offered a resolution changing the name of Washington street, in the Fourth ward, to Washington avenue. Laid on the table." This was probably the other Washington Street.

1867-05-09: Source:Ordinance-1867-washington-st-grading-paving refers to "Washington Street in the Manchester District."

1867-07-19: Source:Resolution-1867-washington-ave-widening calls it "Washington Avenue": "Resolution to widen Washington Avenue"; ". . . Washington Avenue from the P Ft W & c Railroad to Pasture lane . . ."; ". . . said Avenue from Sedgwick st to the Ohio River."

1870-02-15: Pittsburgh Gazette, p. 1 (Newspapers.com 86346902): "Washington Avenue (late called 'Island Lane,') . . ."

1872: Source:Hopkins-1872

• pp. 76–77: Washington Avenue from Allegheny Avenue to Irwin Avenue.
• pp. 88–89: Washington Avenue from Ohio River to Allegheny Avenue.

1909-07-28: Source:Citizens-will-be-strangers: "Washington av / Columbus av / 21–25"

1910-01-27: Source:Councils-to-fix-names-of-streets: ". . . and Washington avenue, North Side, to Columbus avenue."

1910: Source:Ordinance-1910-715: "Washington av., from Irwin av. to Ohio River, old 2d and 6th wds., changed to Columbus av., 21st and 25th wds."

1916-07-02: Source:Fleming-old-allegheny: "Washington avenue was originally Island lane. This was in Manchester, the street later called Washington avenue, now Columbus avenue. It was called Island lane because it came out on the Ohio opposite Brunots Island, first known as Chartiers Island and then as Aliquippa Island."

1933: Source:Ordinance-1933-121: "Columbus Avenue / [from] Sedgwick Street / [to] Irwin Avenue / 21st & 25th [Ward] / [changed to] California Ave."