'Forecasting the growth of nations', Harpers
Tags: 1914-1918; 1920s; 1921; 1921-5-1; Birth control; Europe; Influence; Kelly, Fred C. (Fred Charters); Medicine; Moral and ethical aspects; Pearl, Raymond; Population; Population forecasting; Reproduction and Development; Statistics; United States; World War I
'How the Wright brothers began', Harpers
Tags: 1930s; 1939; 1939-10-1; Aeronautical engineers; Aeronautics; Aeronautics and Aerospace; Biography; Engineering; History; Inventors; Kelly, Fred C. (Fred Charters); Orville Wright; United States; Wilbur Wright
'They wouldn�t believe the Wrights had flown', Harpers
Tags: 1940; 1940-8-1; 1940s; Aeronautical engineers; Aeronautics; Aeronautics and Aerospace; Engineering; History; Inventors; Kelly, Fred C. (Fred Charters); Orville Wright; Public opinion; United States; Wilbur Wright
'How we invented the airplane', Harpers
Tags: 1950s; 1953; 1953-6-1; Aeronautics; Aeronautics and Aerospace; Airplanes; Design and construction; Engineering; Kelly, Fred C. (Fred Charters); Orville Wright; United States; Wilbur Wright; Wright, Orville
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