^Campbell, Douglas E. (2018).
"37854/37855 - Sikorsky RS-4". VPNavy! USN, USMC, USCG and NATS Patrol Aircraft Lost or Damaged During World War II - Listed by Bureau Number (2018 ed.). Lulu.com. p. 321.
ISBN978-1-387-88879-5.
Bibliography
Andrade, John (1979). U.S.Military Aircraft Designations and Serials since 1909. Midland Counties Publications.
ISBN0-904597-22-9.