E. F. Johnson Company Product. 7 1/4" x 9 1/4" black and white photograph of an E. F. Johnson Co. radio product; a telemetry duplexer, dated 8-86; shown is a black metal box with two rear 10-pin connectors; background has water droplets.
Waseca business: E.F. Johnson Co.; E.F. Johnson Company; E.F. Johnson Corporate Headquarters; E.F. Johnson Company Corporate Headquarters; E.F. Johnson Co. Corporate Headquarters; E. F. Johnson Co.; E. F. Johnson Company; E. F. Johnson Corporate Headquarters; E. F. Johnson Company Corporate Headquarters; E. F. Johnson Co. Corporate Headquarters.
