Folder: S.F. Bridges-Golden Gate-Waldo Tunnel.
Newscopy: "AUDITORIUM--This cavernous structure isn't a theater, but the new Waldo Tunnel, being constructed just east of the present one. Tunnel is 1000 feet long, and core of earth gradually is being removed. Steel arches will be covered by two feet of concrete. Tunnel is just one part of new Golden Gate Freeway now being built in Marin County."
Written on back: "Tunnels: Waldo Twin Tunnnels Waldo Grade; Highway 101, Marin County".