E.F. Johnson Company Postcard. Material: paper. Size: 4" x 6". Description: color photograph of a man sitting in a truck using an E.F. Johnson Company Product; blue print on back: "E.F. Johnson Co., Waseca, Minn. 56093, Two-way Radio, Convenience and Efficiency need not be expensive! Johnson A.M. and F.M. communications systems offer the professional advantages of quality two-way radio systems at reasonable cost. In addition, NEW! F.M. systems are compatible with existing systems."