| Title | Yerkes Observatory Buildings, Instruments, Equipment, Grounds |
| View | 40-inch Refractor Telescope 3:2136 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | Sections of the pier for the Yerkes Observatory 40-inch refractor telescope. First negative made at the observatory. |
| Subject Terms | Refracting telescopes | Piers (Supporting elements) | Photography |
| Photographer | Ellerman, Ferdinand, 1869-1940 |
| Photograph Date | 1894-07 |
| Physical Format | Glass plate negatives; 9.1 x 11.5 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 | apf6-00063 |
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