Welcome to the Worldwide Greathead family my One-Name Study - Sources
- [S51] E-mails between Sara Baguleys and Jan Cooper from 23 February 2004.
- [S103] E-mails between John Bradley and Jan Cooper from 2 February 2005.
- [S149] E-mails between Chris Garrett and Jan Cooper from 9 June 2006.
- [S245] Emails between Keith Percy and Jan Cooper from 13 November 2008.
- [S503] E-mails between Phil Dutson and Jan Cooper from 16 November 2015 title.
- [S3164] Emails between Henry Greathead and Jan Cooper from 13 December 1997.
- [S4242] Letters between Bob and Sheila Greathead and Jan Cooper from 2 March 2003.
- [S4262] Emails between Margaret Hadley née Greathead and Jan Cooper from 7 April 2003.
- [S4283] Letters between Doris Greathead and Jan Cooper from 15 August 1996.
- [S4980] E-mails between Anna Greathead and Jan Cooper from 24 October 2009 Facebook.
- [S6174] E-mails from Jennifer Cranfield to Jan Cooper from 28 October 2006.
- [S6197] Emails between Duncan Rowley and Jan Cooper 16 March 2003.
- [S7103] Emails between Anne Hallam and Jan Cooper from 16 March 2003.
- [S7197] Emails between Jacqueline Greathead née Hudspith and Jan Cooper from 8 December 2004.
- [S8313] Letters between Judith Kenington née Greathead and Jan Cooper from 2 March 2003.
- [S8314] Letters between Marjory King née Greathead and Jan Cooper from 23 December 2003.
- [S10957] Emails between John Bedford and Jan Cooper from 31 March 2004.
- [S12184] Emails between David Blakeman and Jan Cooper from 8 December 2004.
- [S17118] Emails between Jennifer Oswald-Sealy née Gray and Jan Cooper from 2 August 2006.
- [S20493] Emails between Keith Howell and Jan Cooper from 10 February 2008.
- [S23861] E-mails between John Whittle and Jan Cooper from 26 October 2009.
- [S27016] E-mails between Sue Lane née Boughton and Jan Cooper from 3 February 2005.
- [S30215] E-mails between Brian Flint and Jan Cooper from 10 September 2005.
- [S40016] Lancashire Births, Marriages and Deaths - www.lancashirebmd.org.uk.
- [S47006] General Register Office, Information taken from Death certificate of parents.