Changes

*[http://www.military-researcher.co.uk/KingsRegs1912/Para392Introduction.html A Guide to WW1 Causes of Discharge - Paragraph 392 of King's Regulations 1912]

*[https://warrecordsrevealed.com War Records Revealed]. British, Commonwealth and other military records. Information about various categories of records and medals, especially relating to WW1.

*[http://www.crossandcockade.com Cross & Cockade International (CCI)] Journal of the First World War Aviation Historical Society. Cross & Cockade GB was formed in, and published from, 1970 as the British arm of ''Cross & Cockade'' in the USA, which was formed in 1960. The name changed to ''Cross & Cockade International'' when the US society ceased in 1986. In 1986 ''Cross & Cockade'' [USA] amalgamated with/became associated with [https://www.overthefront.com Over the Front], Journal of the League of WWI Aviation Historians, which holds the archives of ''Cross & Cockade'' [USA] 1960-1985. British ''Journals'' are available at the British Library and Imperial War Museums. The IWM catalogue lists the USA ''Journals'' holdings as ''C&C'' Vol 1 1960- Vol 23 1982 (LBY E.J. 5156 but also see LBY E. 45573), ''OTF'' Vol 1 1986- Vol 11 1996 (LBY E.J. 64).

:[https://www.crossandcockade.com/blog.asp?display=200 ''CCI Journal'' Index]. ''CCI Journal''s include a series of articles "Gazetteer of Flying Sites in the UK and Ireland 1912–1920", [http://www.dtic.mil/dtic/aulimp/citations/gsa/2015_216872/216570.html catalogue details].