| RefNo | DM/3/21 |
| Level | Item |
| Title | Minute of a meeting of the Optical Glass Committee |
| Date | 28 February 1826 |
| Extent | 2 sides |
| Format | Manuscript |
| AccessStatus | Open |
| AccessConditions | OPEN - but photocopying forbidden. |
| RelatedMaterial | See also CMB/1/13, CMB/69-71 |