| Year | 1952 |
| Date | 07-Feb |
| Volume | 106 |
| Issue | 2,646 |
| Page | 178 |
| Category | Photographic |
| Part | |
| Title | Camera Design. An article of great importance for those interested in photography |
| Author | Raymond F.Stock |
| Notes | Shutter delay mechanism, simple roller-blind shutter, three-slit blind, tension control |