Frank B. Estabrook is a Caltech alumus (M.S. 1947, PhD 1950). Estabrook was a physicist at JPL from 1960 to 2006, and Distinguished Visiting Scientist from 2006-2016. He is currently retired. Estabrook's papers consist of project outlines, meeting agendas and minutes, correspondence, and reports related to the Galileo spacecraft and gravitational wave research.

Frank Behle Estabrook (1922- ) began his academic career at Miami University in Ohio, and earned his BA in Physics and Math in 1943. His interest in the study of gravitational waves began after learning Albert Einstein’s theory of relativity as a Caltech graduate student. He earned both his M.S. and PhD in Physics and Math from Caltech in 1947 and 1950. After completing his PhD, Estabrook returned to his alma mater, Miami University for two years as an assistant professor in physics. In 1953 he returned to California and worked as a reactor physicist at Atomics International, a division of North American Aviation. In 1956 he worked for the U.S. Army’s Office of Ordnance Research awarding research contracts.

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