| Date | 1876 |
| Author | Anon. |
| Contribution | Exhibited the latest advances in the design of microscopes. |
| Reference | Richards |
| Notes | On view, at the Central Exposition in Philadelphia, Pennsylvania, were numerous microscopes, including 50 English, 18 American, 6 French, 1 Japanese and a few German. It was improved microscope technology that enabled Koch to make his major discoveries, beginning in this very year. |
| Category | Microscopy |
| Pathogen Class | General |
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