Knowledge builders series

6 films in this series.

Title ▲	Year	Creator	Length	Format	Color	Sound
How The Ear Functions. ▶	1941	Karl Kurt Bosse; Knowledge Builders	11 min	16mm	B&W	sound
How the Eye Functions	1940	Knowledge Builders	22	16mm	B&W	sound
Our Teeth	1941	Knowledge Builders	22	16mm	B&W	Sound
The Story Of Coal ▶	1938	Knowledge Builders	10 min	16mm	B&W	sound
The Story Of Electricity	1941	Knowledge Builders	11 min	16mm		sound
The Story Of Wheat	1940	Knowledge Builders	10 min	16mm	B&W	sound