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![[Aero mail cover addressed to William E. Boeing, President of Aero Club of the Northwest]](/img/placeholder.gif?1773952131 "[Aero mail cover addressed to William E. Boeing, President of Aero Club of the Northwest]")
Boeing, William Edward, 1881-1956, [Aero mail cover addressed to William E. Boeing, President of Aero Club of the Northwest], [2005-10-06-B_text_179]. Museum of Flight Digital Collections, accessed 16/04/2026, https://digitalcollections.museumofflight.org/nodes/view/8735