Welcome to the Worldwide Greathead family my One-Name Study - Sources
- [S27] E-mails between Helen Bishop and Jan Cooper from 23 February 2004.
- [S53] E-mails between Ashley Jones and Jan Cooper from 7 May 2006.
- [S129] E-mails between John Hornby Huitson and Jan Cooper from 13 November 2005.
- [S161] E-mails between Patricia Frykberg and Jan Cooper from 23 October 2006.
- [S177] E-mails between Bob Easby and Jan Cooper from 12 November 2006.
- [S221] Emails between Adrian Oates and Jan Cooper from 13 March 2008.
- [S2942] Emails between Jessica L Ainsworth (née Greathead) and Jan Cooper from 27 January 2006.
- [S4380] Letters between Liselotte Greathead and Jan Cooper from 2 March 2003.
- [S4421] Letters between Frank Greathead and Jan Cooper from 2 March 2003.
- [S4462] Emails between Tony Maw and Jan Cooper from 3 November 2003.
- [S4472] E-mails between Robert S Goulding and Jan Cooper from 18 September 2011.
- [S4516] Letters between Jeremy M Greathead and Jan Cooper from 2 March 2003.
- [S4517] Emails between Nick Greathead and Jan Cooper from 1 March 2007.
- [S4675] E-mails between Carolyn Greathead and Jan Cooper from 13 August 2011 title.
- [S4681] E-mails between Mandy Bellis and Jan Cooper from 4 May 2016.
- [S4692] Emails between Jenny Lynne Greathead and Jan Cooper from 15 September 2009.
- [S4765] Letters between Margaret Greathead and Jan Cooper from 2 March 2003.
- [S5136] Letters between Jean A Greathead and Jan Cooper from 2 March 2003.
- [S8231] Emails between Adrian Dyche and Jan Cooper from 26 April 2005.
- [S9147] Emails between Helen Brewin née Greathead and Jan Cooper from 21 January 2005.
- [S12350] Emails between Martin Forbister and Jan Cooper from 18 December 2004.
- [S18021] E-mails between Carol Ann Wikner and Jan Cooper from 5 November 2017.
- [S22636] Emails between Jo Jesson née Dent and Jan Cooper from 19 April 2009.
- [S32180] Emails between Barbara Glancefield and Jan Cooper from 25 May 2016.
- [S47010] Found on Facebook.