^ Appleby, Joyce; Brinkley, Alan; Broussard, Albert S.; McPherson, James M.; Ritchie, Donald A. (2010). The American vision : modern times. Appleby, Joyce, 1929–2016, National Geographic Society (U.S.) (Teacher wraparound ed.). Columbus, Ohio: Glencoe/McGraw-Hill. p. 364. ISBN 978-0078775154. OCLC 227926730.

^ Hannaford, p. 169.

^ "Coolidge for a New Arms Conference; Demands Constructive Federal Thrift; Favors Participation in German Loan – Sees Hope in Dawes Plan – Proposes Limitation Parley After Reparations Settlement – Intends to Punish Graft – Some Public Officers Guilty, He Says at Associated Press Annual Luncheon – Hears Political Reports – Though All Callers Except Col. George Harvey Describe Their Visits as Formal". The New York Times. April 23, 1924. p. 2. Retrieved June 10, 2019.

^ Sobel 1998a, p. 217.

^ Cordery 2008, p. 302.

^ Bryson 2013, p. [page needed].

^ Sobel 1998a, p. 243.

^ Greenberg 2006, p. 60.

^ Buckley, pp. 593–626.

^ Gilbert, pp. 87–109.

^ Greenberg 2006, p. 9.

^ Jump up to: a b Fuess 1940, pp. 308–309.

^ Fuess 1940, pp. 310–315.

^ Jump up to: a b c "Confirms Daugherty's Story of Coolidge's Second Oath".

^ Sobel 1998a, pp. 226–228; Fuess 1940, pp. 