E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Johnson Multi-Net Trunked Radio System.

E. F. Johnson Company Product in the Field. 6 1/2" x 8 1/2" black and white photograph of a member of the Plaisted Polar Expedition in 1968, shown using E. F. Johnson Co. Messenger III in the Arctic; Johnson radio equipment was used to communicate between base camp buildings, and short-range use between base camp and expedition snowmobiles; the unidentified man in this photograph is recording an incoming message from base camp.

E. F. Johnson Company Product in the Field. 7" x 6" black and white photograph of an unidentified member of the 1968 Plaisted Polar Expedition with his Ski-Doo snowmobile; shown using E. F. Johnson Co. radio equipment, here CB radios, the Johnson Messenger III field packs; the equipment performed through low temperatures and blizzards, -30 degrees F. and other hardships in the Arctic.

E. F. Johnson Company Product. 4 3/4" x 6 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Johnson Personal Messengers, shown in a portable carrying case with chargers and cases.

E. F. Johnson Company Product. 3 1/4" x 6 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Personal Messenger, shown with hands extending the retractable antenna in stop action.

E. F. Johnson Company Product. 9" x 5 1/4" black and white photograph of a model with the E. F. Johnson Co. radio product, the Messenger 100, shown in a triptych of the three models, an auto-installable, a field portable, and a desktop version.

E. F. Johnson Company Product. 7" x 5 1/4" black and white photograph of an E. F. Johnson Co. radio product, the Johnson CB Matchbox.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Personal Messenger in its carrying case; shown with exterior microphone.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Personal Messenger, in its carrying case; shown with exterior microphone.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Johnson FM 540; a version of the Personal Messenger.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Johnson FM Remote Control, a desk model.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Johnson 908 Remote Control, a desk model with stand-up microphone.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Handheld 545, 265147; shown in its carrying case with antenna extended.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Handheld 545, 265152.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Fleetcom II with base and standing microphone, 320445.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Messenger 100, shown installed under the dashboard of an automobile.

E. F. Johnson Company Product in the Field. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Messenger 100, portable, shown in a camping scene for an advertisement; photographers set in a studio visible.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Messenger 110, shown installed under the dashboard of an automobile.

E. F. Johnson Company Product in the Field. Messenger 120 with Young Boy Model. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Messenger 120, shown is use in the kitchen of home, with a young boy, a model as photograph was used for promotional and advertising purposes.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Messenger 120, shown installed under the dashboard of an automobile.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Messenger 121, shown installed under the dashboard of an automobile.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Messenger 320, shown installed under the dashboard of an automobile.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Messenger 350, the first SSB CB transceiver the company produced.

E. F. Johnson Company Product. Messenger II. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Messenger Two, shown in a setting with a map and sunglasses. The Messenger II shown with an optional tone select unit.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Messenger III.