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Replacement propeller spinner and nosecone, which replaced the original spinner and more blunt nosecone which cracked during Lindbergh's May 12, 1927 flight from San Diego to Long Island. That places this photo at Curtiss Field (adjacent to Roosevelt Field), where the spinner and nosecone were replaced prior to Lindbergh's flight to Paris.

A photo of the Ryan NYP "Spirit of St. Louis" at Curtiss Field (adjacent to Roosevelt Field) on Long Island, after the replacement of the original nose cone. Standing from left to right are, B.F. Mahoney, Harry F. Guggenheim, Lindbergh, and Charles Lawrance. Mahoney was the owner of Ryan Airlines, the builders of the "Spirit of St. Louis." Guggenheim, a wealthy buinessman and philanthropist from the North Shore of Long Island, had just met Lindbergh. After Lindbergh's triumphant return to the US, he and Guggenheim would assist the work of another aviation pioneer, Robert F. Goddard. Lawrance was an aeronautical engineer who was instrumental in the development of the air-cooled radial engine. His own company, the Lawrance Aero Engine Company, was purchased by Wright Aeronautical in 1923. In 1925, Lawrance would become the president of Wright Aeronautical and lead the development of the Wright J-5 Whirlwind that powered the "Spirit of St. Louis."

BF Mahoney had already purchased Ryan Aircraft. BF kept the name of the company as Ryan Aircraft leading to some confusion. see link: www.charleslindbergh.com/plane/mahoney.asp

A true Aviation pioneer and hero.