History of AirplanesFrom Aero Digest, April, 1935:
E. M. Laird Airplane Company, Chicago, Illinois
• Six-place sesquiplane. Pratt and Whitney Wasp SIDl engine, 450 horsepower. Span 38 feet. Length overall 27 feet 6 inches. Height overall 8 feet 8 inches. Wing area 250 square feet. Power loading 11.9 pounds per horsepower. Wing loading 21.3 pounds per square foot. [...]
The Bellanca 28-70 was a long-range air racer designed for James Fitzmaurice of Ireland, who christened it Irish Swoop. Although built for the 1934 MacRobertson Race from England to Australia, it never completed any long-distance race, but ultimately inspired a high-speed bomber.
Design and development
To prepare for the 1934 England-Australia race, Col. James “Fitz” [...]
The Northrop A-17 single-engined attack bomber was US Army’s main attack aircraft in the Thirties. The A-17 was well-armed, had good performance, was reliable and dependable, and was widely exported. It was powered by one 750 hp Pratt & Whitney R-1535-11 Twin Wasp Junior fourteen-cylinder air-cooled radial engine.
click to enlarge
photo taken at East Boston [...]