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Seversky Expression, Seversky Soul Urge, Seversky Inner Dream

Books about Seversky:
Alexander P. de Seversky and the Quest for Air Power by James K. Libbey (Aug 2013)
Seversky P-35 - MINI in action No. 1 by Larry Davis, Joe Sewell, Don Greer and Tom Tullis (Nov 5, 1994)
Republic's P-47 Thunderbolt: From Seversky to Victory by Warren M. Bodie (Nov 1994)
Sever the Sky: Evolution of Seversky Aircraft by Edward Maloney (1979)
The Development of Air Doctrine in the Army Air Arm 1917-1941 - Hap Arnold, Chennault, Douhet, Mitchell, Foulois... by U.S. Government, Department of Defense and U.S. Air Force (May 8, 2014)
Seversky Pictorial. by T. K. Johnson (1940)
Popular Mechanics Magazine Aug. 1964: Major de Seversky's Ion-Propelled Aircraft, Test Firing the XP-100, Make... by Don Dinwiddie (Editor) (1964)

Wiki information Seversky:
Seversky Donets is a river on the south of the East European Plain. It originates in the Central Russian Upland, north of Belgorod, flows south-east through Ukraine and then again through Russia to join the Don River, about 100 km from the Sea of...
The Seversky P-35 was a fighter aircraft built in the United States by the Seversky Aircraft Company in the late 1930s. A contemporary of the Hawker Hurricane and Messerschmitt Bf 109, the P-35 was the first single-seat fighter in U.S. Army Air Corps...