Details of exhibit
- Exhibition:
- 1902 Forty-seventh Annual Exhibition of the Royal Photographic Society of Great Britain
- Exhibit title:
- Copper = 75 per cent., manganese = 25 per cent.; etched with dilute sulphuric acid and electric current; x 250 diameters
- Exhibitor:
- Ernest A. Lewis
- Section:
- Scientific, Technical and Photo-Mechanical Exhibits
- Exhibit No.:
- 333
- Exhibit No. 2:
- 4
- Exhibit type:
- Photograph
- Process:
- [Not Listed] ()
- Award:
- none
