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