E. F. Johnson Company Catalog. Radio Transmitting Equipment Catalog No. 965. Material: paper. Size: 8 1/2" x 11". Description: white cover; black print: "Catalog 965, 1938-39"; Description and product information for C and D Condensers, E and F Condensers, Type G Condensers, Type N Condensers, Handle Indicators, Inductors, Insulators, Tube Sockets; 4 pages. Logo in use from 1938-1956.