| Reference number | LBO/1/34 |
| Alternative reference number | LBO/1/92 |
| Level | File |
| Title | Copy letter from Henry Oldenburg to Dr Eccardo Leichner |
| Date | 23 September 1663 |
| Description | Written in answer to his previous letter. |
| Language | Latin |
| Extent | 1p |
| Format | Manuscript |
| Access status | Open |
| Related material | LBO/1/33; |