United States Air Mail Service. A special mailbox with writing "Air Mail Only, Special Air Plane Postage" written on it, with various prices in cents also listed. Mailbox is located in an urban city area. Tag at base of box says "City Hall station." Next scene shows planes in front of a hangar. "US Air Mail Service" sign atop hangar door. An early model 1920s truck arrives in the foreground. Men load mail in the forward cockpit of mail plane. Biplane aircraft in flight to deliver mail.
Research and field tests during Project SOIAS (Sliding On Ice and Snow). Navies plane in snow. Engineer picks up different type of skis and turns them over. Meter in the cockpit. Men push the plane in circle showing all three skis. Plane taxis. C-125 equipped with skis. Equipment used for forecasting weather. Meter records snow conditions. Navies test vehicles make comparison of records made from test flights. Plane takes off. Another Navies test vehicle. Ski shows chemical liquid coming out of holes. Tests on drag recorded. Freeze tests on wheels. Attempts to start aircraft. Mechanics work on aircraft. Interior of the cockpit. C-125 takes off.
Research and field tests during Project SOIAS (Sliding On Ice and Snow). C-125 in flight over terrain, small lakes, Lake of the Woods in Kenora, Canada. Ski equipped C-125 lands. Ski equipped Navion plane lands and taxis. C-125 taxis over Kenora Air base. DeHavilland Beaver taxis. Canadian Fox Moth aircraft taxis. Stationary Canadian Norsemen. Ski attached to aircraft. Shock absorber attached to the ski. C-125 stationary. Two Navion planes face each other. Mechanics work on Navion plane. Mechanics work on landing gear of Ski equipped C-125. Oscillograph instrumentation system used to record load records. Aircraft engineer work on equipment.
Alaska survey expedition. Planes lined up before departure at the air base. Group of officers detailed to the expedition. The officers stand near it. 'US Navy Alaskan Survey Expedition' written on the plane. Group of officers pose for the photographs in front of the plane.
U.S. Navy Alaska survey expedition. A native woman weaves in Alaska territory. A man goes off in a kayak. Mountains in the background. Group of indigenous, native Alaskan people includes children standing. Close-up view of a salmon fish being cut for filet. Natives houses in a village. Ice floats in water.
U.S. Navy Alaska survey expedition. Cannery of Booth Fishery Company. Men seen in front of the Cannery. Sea plane takes off on survey. Sea plane in flight. A fishing boat in water. Snow covered mountains in the background. Men aboard the boat with fish captured.
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