Welcome to the Worldwide Greathead family my One-Name Study - Sources
- [S27] E-mails between Helen Bishop and Jan Cooper from 23 February 2004.
- [S37] E-mails between Richard Huggett and Jan Cooper from 10 July 2012.
- [S129] E-mails between John Hornby Huitson and Jan Cooper from 13 November 2005.
- [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.
- [S4255] Letters between Anthony Arthur Greathead and Jan Cooper from 2 March 2003.
- [S4258] Emails between Muriel Thresher née Greathead and Jan Cooper from 20 April 2004.
- [S4288] E-mails between Rachel Emily Stewart and Jan Cooper from 5 February 2008.
- [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.
- [S5136] Letters between Jean A Greathead and Jan Cooper from 2 March 2003.
- [S6078] Emails between Paul Greathead and Jan Cooper from 15 April 2003.
- [S7073] Emails between Mary F O'Brien née Greathead and Jan Cooper from 10 January 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.
- [S10915] Emails between Wayne Hadley and Jan Cooper from 10 May 2004.
- [S18021] E-mails between Carol Ann Wikner and Jan Cooper from 5 November 2017.
- [S18888] Emails between Jenny Mason née Mawer and Jan Cooper from 10 October 2006.
- [S22636] Emails between Jo Jesson née Dent and Jan Cooper from 19 April 2009.
- [S34245] E-mails between Robyn Sanday and Jan Cooper from 27 September 2005.