Neighborhood: Central Lawrenceville
The original name of 50th Street was Jackson Street, after J. W. Jackson, who owned most of the property along both sides of the street.[1, 2, 3]
In 1868, Pittsburgh’s modern sequence of numbered streets was created by renaming all the streets perpendicular to the Allegheny River; Jackson Street became 50th Street. The renaming ordinance actually says that it was Lothrop Street that became 50th,[4, 5] but this is off by one; see 43rd Street.
Atlas of the cities of Pittsburgh, Allegheny, and the adjoining boroughs. G. M. Hopkins & Co., Philadelphia, 1872. http://historicpittsburgh.org/maps-hopkins/1872-atlas-pittsburgh-allegheny; 1872 layer at http://esriurl.com/pittsburgh.
Atlas of the cities of Pittsburgh, Allegheny, and the adjoining boroughs. G. M. Hopkins & Co., Philadelphia, 1876. http://historicpittsburgh.org/maps-hopkins/1876-atlas-pittsburgh-allegheny.
Cridlebaugh, Bruce S. “Field notes: Changing Pittsburgh street names—from downtown to Lawrenceville.” Pghbridges.com: Bridges & tunnels of Allegheny County & Pittsburgh, PA, Feb. 9, 2000. http://pghbridges.com/articles/fieldnote_pghstnames.htm.
Killikelly, Sarah H. The History of Pittsburgh: Its rise and progress. B. C. & Gordon Montgomery Co., Pittsburgh, 1906, p. 534. DonsList.net HistPgh1909M; Google Books kXmloex-vr8C, poRU0YjqrzsC; HathiTrust 100122020; Historic Pittsburgh 00adc8925m; Internet Archive historyofpittsbu00kill, historypittsbur00killgoog.
“An ordinance changing the names of streets.” Pittsburgh city ordinance, 1868. Passed Aug. 31, 1868. Reprinted in the Pittsburgh Gazette, Sept. 2, 1868, p. 5 (Newspapers.com 86347563), Sept. 3, p. 3 (Newspapers.com 86347623), and Sept. 4, p. 3 (Newspapers.com 86347714).