Erpi Classroom Films Inc.

This film from 1943 explains the mysteries of sound recording on film.

An educational film about the nervous system produced by Encyclopædia Britannica Films, an educational film production company in the 20th century owned by Encyclopædia Britannica Inc.

This short films see men crafting furniture.

ERPI Films was one of the largest producers of educational films in the 1930's. They were a division of Western Electric, the manufacturing and supply division of the Bell System.

The cultivation and use of the soybean as an illustration of the relation of science to agriculture and the interrelation of science, agriculture, and industry.

The story of three little kittens from shortly after the time they are born until they are old enough to "work" on the farm where they live.

Portrays the actions of the esophagus, stomach, small intestine and colon. Shows normal and stimulated stomach movements, such as hypermobility, inhibition and hunger contractions, and pictures such intestinal phenomena as segmentation and peristalsis.