^"Sir Isaac Babson" (1948, August, 23). Newsweek, 32(8), p. 47.
^Babson, R. W. (1950). Chapter XXXV – Playing with Gravity, Actions and Reactions [Second Revised Edition]. New York: Harper & Brothers Publishers [1]Archived 2007-09-27 at the Wayback Machine. Page over to Chapter XXXV for Roger W. Babson's description of the Gravity Research Foundation.
^Rideout, George M (2008), “1949–2009 Sixty years Gravity Research Foundation P.O. Box 81389, Wellesley Hills, MA 02481-0004, USA”, General Relativity and Gravitation40 (12): 2685–2686, Bibcode: 2008GReGr..40.2685R, doi:10.1007/s10714-008-0680-y
^Witten, L. (1998). Introductory remarks on the Gravity Research Foundation on its fiftieth anniversary. In N. Dadhich & J. Marlikar (Ed.). Gravitation and Relativity: At the Turn of the Millennium [p. 375]. 15th International Conference on General Relativity and Gravitation. Pune, India: Inter-University Centre for Astronomy and Astrophysics. ISBN81-900378-3-8
^See Appendix Intro. 3: Gravity – Our Enemy Number One. In Harry Collins (2004). Gravity's Shadow: The Search for Gravitational Waves. Chicago, IL: The University of Chicago Press. ISBN978-0-226-11378-4
^Valone, T. (Ed.) (2001, January). Electrogravitics Systems: Reports on a New Propulsion Methodology [p. 4]. Washington, DC: Integrity Research Institute.
^Mooallem, J. (2007, October). A curious attraction. Harper's Magazine, 315(1889), pp. 84-91.
^Kaiser, D. (2000). Chapter 10 – Roger Babson and the Rediscovery of General Relativity. Making Theory: Producing Physics and Physicists in Postwar America [PhD Dissertation]. Harvard University, pp. 567-594.
Babson, Roger W. (1950). Chapter XXXV – Playing with Gravity, Actions and Reactions [Second Revised Edition]. New York: Harper & Brothers Publishers [2]Archived 2007-09-27 at the Wayback Machine. Page over to Chapter XXXV for Roger W. Babson's description of the Gravity Research Foundation.