Ryan NYP Spirit of St. Louis Master Three-View Blueprint Photostat (1927)

Blueprint photostat of the Ryan NYP Spirit of St. Louis three-view general arrangement drawing showing front, top, and side profiles. — Ryan NYP Spirit of St. Louis Master Three-View Blueprint Photostat (1927) · Donald A. Hall Estate Collection

An original factory blueprint photostat from the Ryan Airlines engineering department showing the definitive three-view general arrangement of the Ryan NYP Spirit of St. Louis. Drafted by Donald A. Hall Sr., the technical drawing presents the plan view of the expanded 46-foot wing, the front elevation showing the Wright J-5 Whirlwind radial engine and wide-track landing gear, and the side elevation illustrating the fully enclosed cockpit with periscope installation and empennage geometry. This drawing served as the master structural blueprint from which the historic transatlantic monoplane was built.