Queensboro Tunnel.
East River Tunnel, New York.
Tunnel Under the New York East River
The Brooklyn Subway, New York.
[Tunnel construction.]
[Holland Tunnel.]
[McAdoo Tunnel.]
Subways and Tunnels, Manhattan Island
[Digging subway tube under East River for Queensboro Subway.]
[North tunnel shield.]
Unidentified tunnel.
Original Exhibits of Rapid Transit Subway Construction Company, Plaintiff [Excavating a tunnel; subway construction.]
Subways, Fourteenth Street Cut for Subway, #1.
Unidentified track tunnel.
The Holland Tunnel
Subway tunnel construction at Lexington Avenue and 97th Street.