| Repository | Scottish Catholic Archives, Historic Archives |
| Ref No | SCAHA/LS/5/26/5/3 |
| Title | 42 |
| Date | [early 18th cent] |
| Level | Item |
| Description | Continues: ' … To all who have studyed the opticles Throughly that there is no such thing.' |
| Physical Description | sewn pages |
| AccessConditions | Scottish Catholic Archives, Historic Archives, University of Aberdeen |
| Language | English |