[McAdoo Tunnel.]
[Constructing the McAdoo Tunnel.]
McAdoo Tunnel under North River, New York
[William McAdoo.]
Building the McAdoo Tunnel, Under the Hudson River, New York.
[Cheering parade of delegates after nominating McAdoo for president.]
[Tunnel construction.]
[North tunnel shield.]
Southbound express tunnel.
[Holland Tunnel.]
Queensboro Tunnel.