Jack Parsons
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John Whiteside Parsons was an American rocket engineer, chemist, and Thelemite occultist. Associated with the California Institute of Technology (Caltech), Parsons was one of the principal founders of both the Jet Propulsion Laboratory (JPL) and the Aerojet Engineering Corporation. He invented the first rocket engine to use a castable, composite rocket propellant, and pioneered the advancement of both liquid-fuel and solid-fuel rockets.
Parsons (dark vest) and GALCIT colleagues in the Arroyo Seco, Halloween 1936. JPL marks this experiment as its foundation.
GALCIT Group members in the Arroyo Seco, November 1936. Left foreground to right: Rudolph Schott, Amo Smith, Frank Malina, Ed Forman, and Jack Parsons.
Parsons in 1938, holding the replica car bomb used in the murder trial of police officer Captain Earl Kynette
Frank Malina
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Frank Joseph Malina was an American aeronautical engineer and painter, known for his pioneering work in early rocketry.
Malina, c. 1950
Malina (second from right) with Theodore von Kármán during his work on JATO in 1941
Malina and his fifth WAC Corporal, October 11, 1945