| Answer | Crossword Clue |
|---|---|
| stannotype | a photograph taken upon a tin plate |
| stannotypes | STANNOTYPE, a photograph taken upon a tin plate |
| ferrotype | an old form of photograph taken using a film on an iron plate / to take a photograph by ferrotype |
| ferrotypes | FERROTYPE, an old form of photograph taken using a film on an iron plate |
| daguerreotypes | A photograph taken by an early photographic process employing an iodine-sensitized silvered plate and mercury vapor |
| daguerreotype | A photograph taken by an early photographic process employing an iodine-sensitized silvered plate and mercury vapor |
