The Junker was developed by Hugo Junkers for the Germans during
the First World War. These monoplanes were considered to be
among the best aircraft, since they were large and rugged in
construction having all-metal fuselage and wings.
Following the war, various types of Junkers were designed for
the civilian market.
They were built with closed cabins that could be heated with
air vents that directed heat from the engine. This made the
Junkers useful for transporting passengers and freight. Another
advantage they had over the small, open cockpit biplanes that
many aviation companies were still using, was that the Junkers
could fly longer distances without refuelling.
Many aviation companies used Junkers for bush flying,
passenger service, and delivery of freight and mail. In 1921,
Company used two Junkers to fly to the oil well and Fort Norman.