Two colour experiment, Crawley's system
- PART OF:
- Wiliam Friese-Greene Archive
Glass slide, T3 two-colour experiment, Crawley's system, 1897 (?). Showing William Friese-Greene posting a letter.
Glass slide, T3 two-colour experiment, Crawley's system, 1897 (?). Showing William Friese-Greene posting a letter.