[McAdoo Tunnel.]
[Constructing the McAdoo Tunnel.]
Building the McAdoo Tunnel, Under the Hudson River, New York.
McAdoo Tunnel under North River, New York
[William McAdoo.]
[Cheering parade of delegates after nominating McAdoo for president.]
Shaft No. 4, Steinway Tunnel.
[Tunnel construction.]
[North tunnel shield.]
[Holland Tunnel.]
Queensboro Tunnel.
Southbound express tunnel.