E.F. Johnson Company Business Cards. Material: paper. Size: 2" x 3 1/2". (a) Description: white card; black print: "E. F. Johnson Company, Manufacturers of Electronic Products, Waseca, Minnesota"; red and black logo on left. (b) white card; black and red print: "E. F. Johnson Company, Waseca, Minnesota, U.S.A., Manufacturers of Electronic Products"; red and black logo in upper left. (c ) white card; black and red print: "E. F. Johnson Company, Manufacturers of Radio Electronic Products, Waseca, Minnesota"; black logo on left.