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.