^ abcdMamuscript Group 601, compiled by William E. Brown, Jr., Guide to the F. Trubee Davison Papers, Manuscripts and Archives, Yale University Library, New Haven, Connecticut, May 1982.
^Alexandra Robbins, Secrets of the Tomb: Skull and Bones, the Ivy League, and the Hidden Paths of Power, Little, Brown and Company, 2002, page 108, 187.
^ abMarc Wortman, The Millionaires' Unit: The Aristocratic Flyboys who Fought the Great War and Invented America's Airpower. New York : Public Affairs, 2006. ISBN 1586483285