Description of system used since the electrification. (2000 w.) (No. 95752)
Automatic "light" signals in Park Avenue tunnel
R R Age Gaz
1908
Ills.
Article (Journal)
English
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The Park Avenue tunnel cave-in
Engineering Index Backfile | 1902
Automotive engineering | 1991
|Cave-in at the Park Avenue rapid transit tunnel
Engineering Index Backfile | 1902
Online Contents | 1996
Signals in the Fourth Avenue tunnel, New York
Engineering Index Backfile | 1893