| Reference number | LBO/3/40 |
| Alternative reference number | LBO/3/79 |
| Level | File |
| Title | Copy letter from Henry Oldenburg, London, to Signor Borelli |
| Date | 18 May 1669 |
| Description | Oldenburg invites Borelli to a Philosophical Correspondence, and particularly to communicate the observeables of the Eruptions of Mount Aitna [Etna] etc. |
| Language | Latin |
| Extent | 2p |
| Format | Manuscript |
| Access status | Open |