1920 IRT Elevated Lines in Manhattan and the Bronx: 2nd, 3rd, 6th, 9th Aves.
1920 IRT Elevated Lines in Manhattan and the Bronx: 2nd, 3rd, 6th, 9th Aves.
(click to enlarge)
https://www.nycsubway.org/perl/show?/img/maps/calcagno-1920-elevated.gif
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