| Reference Number | Title | Date |
| RBC/16 | Letter from Edward William Pritchard to Richard Butcher | 18 November 1854 |
| RBC/18 | Letter from Edward William Pritchard to Richard Butcher | November 1854 |
| RBC/39 | Letter from Edward William Pritchard to Richard Butcher | 23 January 1855 |
| RBC/73 | Letter from Edward William Pritchard to Richard Butcher | 4 November 1855 |
| RBC/85 | Letter from Edward William Pritchard to Richard Butcher | 2 June 1855 |
| RBC/102 | Letter from Edward William Pritchard to Richard Butcher | 7 March 1856 |
| RBC/138 | Letter from Edward William Pritchard to Richard Butcher | 27 September 1856 |
| RBC/160 | Letter from Edward William Pritchard to Richard Butcher | 12 November 1856 |