Interview discusses, not in chronological order: early home life and schooling; undergraduate at Leiden, influence of Paul Ehrenfest, Jan H. Oort, Jacobus C. Kapteyn, Gerard Kuiper, Antonie Pannekoek, Ejnar Hertzsprung. Recollections of work of Georg Uhlenbeck and Samuel Goudsmit. Assistant to Peter van Rhijn at Groningen ca. 1928, work on various stellar and galactic topics. Move to Harvard, 1929, and atmosphere there under Harlow Shapley. Marriage to Priscilla Fairfield Bok; her contacts with William W. Campbell. Search for and interpretation of spiral auras of our galaxy; studies of stellar density distribution. Activities during World War II. Harvard astronomy group's difficult postwar transition; McCarthyism. Work on nebulae and globules. Comments on astronomy at Mt. Wilson, Tonantziutla, and South Africa. Origins of Harvard radio astronomy and National Radio Astronomy Observatory, and their funding. Move to Australia, 1956, and conditions there. Move to Steward Observatory of University of Arizona, 1964, and conditions there. Location of national observatory at Kitt Peak; management of Kitt Peak. Discussions of astronomy, education, popularization, employment, and organization. Also prominently mentioned are: Wilhelm Heinrich Walter Baade, McGeorge Bundy, Edwin F. Carpenter, Tom Cherry, James Bryant Conant, Arthur Stanley Eddington, Sergei Gaposchkin, Jesse Leonard Greenstein, Haro, David Heeschen, Ejnar Hertzsprung, James Jeans, Ivan Robert King, Bertil Lindblad, Antonia Maury, Nicholas Ulrich Mayall, Joseph McCarthy, Sidney McCuskey, Aden Meinel, Donald Howard Menzel, Robert Menzies, James E. Miller, Edward Arthur Milne, William Wilson Morgan, Edward Charles Pickering, Harry Hemley Plaskett, Nathan Pusey, Martin Schwarzschild, Willem de Sitter, Otto Struve; American Astronomical Society, Associated Universities for Research in Astronomy, Associated Universities, Inc., Boyden Observatory, Case Institute of Technology, Harvard College Observatory, Harvard Series on Astronomy, Indiana University, Mount Stromlo Observatory, National Science Foundation (U.S.), Ohio State University, Princeton University, Rijksuniversiteit te Groningen, Rijksuniversiteit te Leiden, University of Arizona, University of Illinois, University of Michigan, and University of Texas.
