M'Adoo Tunnel; Morton Street tubes completed; Cortlandt Street tubes under way. M'Adoo Terminal, 6th Ave. and 33d St.; Penna. Tunnels on lowest level; proposed municipal subway; M'Adoo subway terminus; surface lines; 6th Ave., "L" and bridge over "L."
Digital version published by City University of New York. Graduate School and University Center, Mina Rees Library.
The Pennsylvania Railroad tunnels and terminals in New York City (New York: M. King)
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