![](https://image.tmdb.org/t/p/w300/fg8mMEeNwbWE3u8DklbOOVGRpfg.jpg)
Electrostatics
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.
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.