Welcome to the Worldwide Greathead family my One-Name Study - Sources
- [S45] Letters between Rennie Cooke and Jan Cooper from 10 November 2003.
- [S82] E-mails between Nicki Brookes and Jan Cooper from 9 April 2012.
- [S220] Emails between Rosemary Thorburn and Jan Cooper from 13 March 2008.
- [S1761] E-mails between Anthoney Greathead and Jan Cooper from 21 August 1996.
- [S1775] Letters between Tom Greathead and Jan Cooper from 15 August 1996.
- [S1783] Letters between Dorothy Greathead and Jan Cooper from 15 July 1996.
- [S1785] Letters between William Greathead and Jan Cooper from 10 March 1997.
- [S1786] Letters between William Greathead and Jan Cooper from 27 March 1997.
- [S1789] Letters between Joyce Mirfin née Greathead and Jan Cooper from 31 March 1996.
- [S1792] Letters between Angela Murray née Greathead and Jan Cooper from 30 September 2002.
- [S1810] Emails between Claire Jeffreys née Stephens and Jan Cooper from 1 October 2008.
- [S1812] Letters between Stuart H Greathead and Jan Cooper from 2 March 2003.
- [S1816] E-mails between Shan Hughes and Jan Cooper from 1992.
- [S3992] Letters between Derek Greathead and Jan Cooper from 27 March 1997.
- [S4241] Emails between Jim Greathead and Jan Cooper from 12 May 2003.
- [S4460] Letters between Donald Greathead and Jan Cooper from 2 March 2003 until his death.
- [S4670] Letters between Katharine E Greathead and Jan Cooper from 2 March 2003.
- [S5341] Emails between Wendy Smith and Jan Cooper from 16 March 2003.
- [S9057] Emails between Judith Lancefield and Jan Cooper from 24 March 2003.
- [S9646] Emails between Diane Hutson and Jan Cooper from 27 November 2004.
- [S11398] Emails between Derek Woodney and Jan Cooper from 9 April 2004.
- [S12238] Emails between Ann Russell and Jan Cooper from 8 December 2004.
- [S16931] Emails between Dianne Irwin née Kelso and Jan Cooper from 1997.
- [S19237] Emails between Tony Boyle and Jan Cooper from 8 January 2004.
- [S26304] Emails between Kerry Eustace and Jan Cooper from 18 February 2011.