The Boeing Model 15 was a United States open-cockpit biplane single-seat fighter aircraft of the 1920s, manufactured by the Boeing company. The Model 15 saw service with the United States Army Air Service (as the PW-9 series) and with the United States Navy as a carrier-based fighter (as the FB series).
Read more about Boeing Model 15: Design and Development, Operational History, Variants, Operators, Specifications (PW-9)
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—Mrs. H. O. Ward (1824–1899)