| RefNo | Title |
| DF/MIN/20/7/3 | Solly, Richard Harrison: Crystal measurements book II, blende |
| DF/MIN/20/7/2 | Solly, Richard Harrison: Crystal measurements book I, blende |
| DF/MIN/20/7/1 | Solly, Richard Harrison: Crystal measurements book, acanthite |
| DF/MIN/7/80 | Rathite and Wiltshireite synonomy correspondence |
| DF/MIN/20/1/3 | Letters to Nevil Story-Maskelyne and George F Herbert Smith |