| Reference number | EL/W3/1 |
| Level | Item |
| Title | Observations of the anatomy of crayfish by Jean Gaspar de Woulffen for Monsieur de Mayerne |
| Date | 1642 |
| Language | English |
| French |
| Extent | 7p |
| Format | Manuscript |
| Digital images | View item on Science in the Making |
| Access status | Open |
| URL description | Also available on Early Modern Letters Online |