| Reference number | LBO/3/28 |
| Alternative reference number | LBO/3/54 |
| Level | File |
| Title | Copy letter from Samuel Colepresse, Leyden, to Henry Oldenburg |
| Date | 13 April 1669 |
| Description | Concerning the mineral queries answers from Danemark, and the way of making opal glasses |
| Extent | 2p |
| Format | Manuscript |
| Access status | Open |