The company was founded in 1923 by Edgar F. Johnson and his wife Ethel Johnson. The company began as a mail order business, selling radio transmitting parts to amateurs and early radio broadcasters from space shared with a woodworking shop located in downtown Waseca. In 1936, E.F. Johnson Co. built its first factory and office building in Waseca, and had 17 employees.
Founded in 1923 by Edgar F. Johnson and his wife Ethel Johnson, the company began as a mail-order business selling radio transmitting parts to amateur enthusiasts and early broadcasters, sharing space with a woodworking shop in downtown Waseca. In 1936, E.F. Johnson Co. built its first factory and office building in Waseca, employing seventeen employees.