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