Douglas Harlon Trailers
How the Eye Functions TrailerHow the Ear Functions TrailerThe Story of Our Flag Trailer
Most Popular Douglas Harlon Trailers
Total trailers found: 3
The Story of Our Flag Trailer (1939)
01 January 1939
The history of America's familiar Stars and Stripes flag is chronicled, alongside the historical events that shaped America from its colonial roots through its expansion into a union of 48 states, with an empire extending into the Pacific.
How the Ear Functions Trailer (1940)
20 October 1940
The science of hearing is explained with animated diagrams of the human auditory system.
How the Eye Functions Trailer (1941)
01 January 1941
The science of vision is explained with animated diagrams of the human eye
