| Answer | Crossword Clue |
|---|---|
| DIORAMA | Picture viewed through a small opening. |
| peepshow | an exhibition viewed through a small opening |
| peepshows | PEEPSHOW, an exhibition viewed through a small opening |
| vectograph | a picture giving a special effect when viewed through three-dimensional spectacles |
| vectographs | VECTOGRAPH, a picture giving a special effect when viewed through three-dimensional spectacles |
| kinetoscopes | An early motion-picture device in which the images were viewed through a peephole |
| kinetoscope | An early motion-picture device in which the images were viewed through a peephole |
| anaglyph | composite picture printed in two colors that produces a three-dimensional image when viewed through spectacles having lenses of corresponding colors |
