| Year | 1994 |
| Date | 07-Jan |
| Volume | 172 |
| Issue | 3,960 |
| Page | 20 |
| Category | Optical |
| Part | 5 |
| Title | Biological Microscope and Vertical Illuminator |
| Author | H.A.Holland |
| Notes | Details for completing the slides. Intermediate slide bearing and operating bar, finishing and mounting the upper slides, finishing the bottom slides |