Notes:Chicago Street
1873-02-14 (recorded): Source:Wm-hazlett-heirs-plan has Fort Street.
1876: Source:Hopkins-1876, page 70, shows "Haslett's Plan" with Fort Street.
1886: Source:Hopkins-1886, plate 8, shows "Heirs of William Hazlett Plan" with Fort Street.
1889-02 (recorded 1892-10-06): Source:Peter-margaretha-sauer-plan has the western part of Main Street.
1889-02 (recorded 1901-10-22): Source:Peter-sauer-et-ux-plan has the eastern part of Main Street.
1892-03-29: Source:Lgeo-allegheny-eastern-east-st-valley-annexation: Sauer plans annexed by Allegheny.
1897: Source:Hopkins-1897, plate 16, shows Fort Street and Main Street together.
1902: Source:Hopkins-1902-allegheny-vol-2, plate 16, shows Main Street.
1906: Source:Hopkins-1906, plate 17, shows Fort Street.
1907-12-06: Source:Lgeo-allegheny-annexation: Allegheny annexed by Pittsburgh.
1910-03-31: Source:Ordinance-1909-1910-715: "Main, from Aner to city line, old 14th wd., changed to Muth, 26th wd."
1918-02-18: Source:Ordinance-1918-30: "Muth street, from Aner street to City line, Twenty-sixth Ward, be changed to Chicago street."
1931-03-16: Source:Lgeo-northview-heights-east-annexation: Hazlett plan annexed by Pittsburgh.
1934-01-15: Source:Ordinance-1934-9: "Fort street from West Line of Wm. Hazlett Plan to Main avenue, changed to Chicago street. ¶ Fort street from Main avenue to West avenue, changed to Mainland street."
1953: Source:Gross-map shows Chicago Street along former Main Street and most of Fort Street.
1958-05-19: Source:Ordinance-1958-215 vacated Zurich Street from Arens Street to Mainland Street.
Fort Street may have been named for the remnants of a Civil War fortification nearby.
"A sketch of the defenses of Pittsburg":
- https://catalog.archives.gov/id/305785
- https://commons.wikimedia.org/wiki/File:Sketch_of_the_Defenses_of_Pittsburg_(sic)_made_by_order_of_Captain_Craighill,_Corps_of_Engrs.,_USA,_July_20th,_1863..._-_NARA_-_305785.jpg
- https://www.civilwarpittsburgh.com/post/documenting-the-defenses-a-photographic-look-at-pittsburgh-s-1863-fortifications
_made_by_order_of_Captain_Craighill,_Corps_of_Engrs.,_USA,_July_20th,_1863..._-_NARA_-_305785.jpg){kind=link}