| Year | 1957 |
| Date | 12-Sep |
| Volume | 117 |
| Issue | 2,938 |
| Page | 380 |
| Category | Photographic |
| Part | |
| Title | A universal Ball-and-Socket Head for a camera tripod |
| Author | Ernest L.Lee |
| Notes | Full details for this aid to photography. Method of drilling cross holes in round stock, preventing slipping, Schedule of sundry finished parts required |