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Baugher, J. 2018 1944 USAAF Serial Numbers (44-40049 to 44-70254). Joe Baugher's Home Page. Retrieved 3 May 2018 from <http://www.joebaugher.com/usaf_serials/1944_4.html>.
National Archives of Australia [NAA] 1945, Aircraft status cards - Liberator A72-100 to A72-198, A10297, BLOCK 405.
National Archives of Australia [NAA] 1960, GRADWELL, David Preston - (Flight Lieutenant); Service Number - 8960; File type - Casualty - Repatriation; Aircraft - Liberator A72-191; Place - Northwest coast of Borneo; Date - 25 March 1945, A705, 166/16/612.
Tigwell, C. 2016 RAAF A72 Consolidated B-24D/J/L/M Liberator. ADF Serials. Retrieved 1 April 2017 from <http://www.adf-serials.com.au/2a72.htm>.
Record updated on 3 May 2018.