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German First World War flying ace Oswald Boelcke poses in the cockpit of his Fokker E.IV.
Photo taken in 1916, therefore PD in the US due to being published before 1923
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This image is in the public domain in the United States. In most cases, this means that it was published in the United States prior to January 1, 1923 or that its first publication anywhere in the world was prior to January 1, 1909 or that its copyright expired in the United States. |
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