Some items within this sub-group contain entries which are coded. The key to this code is the word ‘industrey’ (sic) where i=1, n=2, d=3 and so on until y=9. The figure 0 is represented by itself.
Operation records
This material is held atV&A Archive of Art and Design
- Reference
- GB 73 Heals-6
- Dates of Creation
- [1837]-1982
- Physical Description
- 484 items