| Reference number | LBO/3/13 |
| Alternative reference number | LBO/3/27 |
| Level | File |
| Title | Copy letter from Henry Oldenburg, London, to Christian Huygens |
| Date | 6 February 1668/1669 |
| Description | Oldenburg's answer to Huygens
Contains cypher at end;
a b c d e f g h i l m n o p r s t u x y
7 4 4 4 12 1 3 6 10 7 1 7 9 2 6 2 7 4 1 11 |
| Language | French |
| Extent | 2p |
| Format | Manuscript |
| Access status | Open |