| Reference number | LBO/4/17 |
| Alternative reference number | LBO/4/31 |
| Level | File |
| Title | Copy letter from Johannes Hevelius, Gedani [Gransk] to Henry Oldenburg |
| Date | 5 July 1670 |
| Description | ' Concerning the Telescope and Microscope hee received from London, and some Observtions of the variation of the Magnet, as also of an uncommon succinum. ' |
| Language | Latin |
| Extent | 5p |
| Format | Manuscript |
| Access status | Open |