[1] https://hdl.handle.net/2027/mdp.39015068120040?urlappend=%3B... - Popple, C. Sterling. (1952). Standard Oil Company (New Jersey) in World War II. New York: Standard Oil Co. (N.J.). Pages 119-120.
[2] http://www.royalpioneercorps.co.uk/rpc/history_compound.htm -- "Taken from The Royal Pioneer, Issue No 40, September 1954"