| Ref No | GSL/L/R/11/165a |
| Title | Letter from the ÉCOLE NATIONAL DES MINES |
| Date | 31 May 1849 |
| Level | Item |
| Extent | 1 letter/item |
| Format | Document |
| Description | Secretary's In Letters: from the ÉCOLE NATIONAL DES MINES, Paris, 31 May 1849. [in French] |
| Access Conditions | Access is by appointment only. Please contact the Archivist for further information. |
| Language | French |
| ArchNote | Description by John Thackray |