| Sources |
- [S20] Ancestry.com, British Army WWI Pension Records 1914-1920, (Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2010;), WO364; Piece: 3752.
Record for John William Harry Sleeman
http://search.ancestry.co.uk/cgi-bin/sse.dll?db=BritishArmy&h=665787&indiv=try
- [S16] Ancestry.com, British Army WWI Service Records, 1914-1920, (Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2008;).
Record for John William Harry Sleeman
http://search.ancestry.co.uk/cgi-bin/sse.dll?db=BritishArmyService&h=1918957&indiv=try
- [S110] Ancestry.com, 1911 England Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2011;), Class: RG14; Piece: 7701; Schedule Number: 25.
Record for John Sleeman
http://search.ancestry.co.uk/cgi-bin/sse.dll?db=1911England&h=41065135&indiv=try
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