| Reference number | LBO/2/93 |
| Alternative reference number | LBO/2/239 |
| Level | File |
| Title | Copy extract of a letter from Richard Norwood to Henry Oldenburg |
| Date | 16 July 1668 |
| Description | Concerning his endeavours of improving Telescopical glasses |
| Extent | 3p |
| Format | Manuscript |
| Access status | Open |