|AviationHeritage.org - Working to document aviation heritage and history through the use of modern technologies|
|Curtiss P-40F, Lockheed Hudson, and CAC Boomerang (Daniel J. Leahy, 2014)|
Baugher, J. 2018 US Navy and US Marine Corps BuNos Second Series (0001 to 5029). Joe Baugher's Home Page. Retrieved 2 August 2018 from <http://www.joebaugher.com/navy_serials/secondseries1.html>.
Musselman, J.C. 1942 War Diary, Marine Fighting Squadron 221, 6 July 1942. Archived at <https://www.fold3.com/image/1/267913964>.
Record updated on 1 November 2018.