Frith Films presents, Builders Of The Broad Highway, Part 2. Produced and Photographed by Emily Benton Firth, Commentator Don McNamara.

Frith Films presents, Builders Of The Broad Highway, Part 1. Produced and Photographed by Emily Benton Firth, Commentator Don McNamara.

Government-sponsored film about the building of the Boulder dam.

Encyclopedia Britannica Films in collaboration with Robert S. Lynd, PhD, Columbia University.

Travelogue documentary distributed by RKO Radio Pictures and produced by the Van Beuren Corporation. Part of the World on Parade series.