Yerkes Observatory Buildings, Instruments, Equipment, Grounds
| Title | Yerkes Observatory Buildings, Instruments, Equipment, Grounds |
| View | 40-inch Refractor Telescope 56:424 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | Double slide plate holder with occulting sector attached to the Yerkes Observatory 40-inch refractor telescope. |
| Subject Terms | Refracting telescopes | Astronomical photography |
| Photograph Date | 1909 |
| Physical Format | Glass plate negatives; 19.9 x 24.8 cm |
| Manufacturer | Alvan Clark & Sons; Warner & Swasey Company |
| Location | 373 West Geneva Street | Williams Bay, Wisconsin |
| Campus Grid | Y01 |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf6-01387 |
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