Brian,
Bibliography - Official Archives Collections
RAF Museum.
Deacon Elliott, Robert, 72 Squadron World War II, Dec 1939-Dec 1940, photocopy of typescript, 1961, X002-5542.
See:
Australia's Few and the Battle of Britain.
Kirsten,Alexander.
Barnsley:Pen & Sword Aviation,2015.
p.387.
Deacon-Elliott not mentioned in index (he is mentioned several times in the Notes [pp.363-384]).
Deacon-Elliott's work is also widely quoted in Tom Docherty's, Swift To Battle No.72 Fighter Squadron RAF in Action Volume 1: 1937-1942 (Pen & Sword Aviation, 2009), (pp.59, 60, 74, 80-82, 88, 91, 98, 104-106, 108-111, 113 and 114).
Bibliography and References. (p.253):
Elliot[sic], Group Captain R Deacon, OBE DFC RAF, World War II December 1939-December 1940, RAF Museum Ref. X002-5542.
http://bbm.org.uk/airmen/Deacon-Elliott.htm
http://rafweb.org/Biographies/Deacon-Elliott_RD.htm
Col.