Bernt Balchen (left) and Lincoln Ellsworth examine the "Polar Star", which will be flown by Balchen during Ellsworth's expedition over Antarctica, at a Northrop hangar. The "Polar Star" is one of two Northrop Gammas that were the first aircraft produced in 1933 by the newly established Northrop Corporation. In April 1936, Lincoln Ellsworth donated the Polar Star to the Smithsonian. Photo dated: October 18, 1932.
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