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Dunn received both undergraduate and graduate degrees in aeronautical engineering from the California Institute of Technology (Caltech) in Pasadena, CA. During that time the Guggenheim Aeronautical Laboratory at Caltech (GALCIT), a prestigious aeronatuical engineering research facility, was led by Theodore von Kármán. By 1943 Dunn had joined the Caltech faculty and become a naturalized U.S. citizen.
In 1943 and 1944, von Kármán and Frank Malina, who had been doing rocket research at GALCIT, began using Jet Propulsion Laboratory (JPL) in the names of their projects. Malina hired Dunn to be the assistant director of JPL in 1945. Dunn took over as acting director when Malina left and was formally appointed as director in 1947. Dunn resigned from this position in 1954. William Hayward Pickering, who had been project manager for the Corporal missile under Dunn, succeeded him as JPL director.
Ramo-Woolridge and Aerojet General
- Bluth, John. "Von Karman, Malina laid the groundwork for the future JPL". JPL.