Comets
| Title | Comets |
| View | 21P/ Giacobini-Zinner 68:6820 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | Comet Giacobini-Zinner rediscovered by George Van Biesbroeck 15 October 1939 close to its predicted place. |
| Subject Terms | Giacobini, Michel, 1873-1938 | Zinner, Ernst, 1886-1970 | Giacobini-Zinner comet | Astronomical photography |
| Photographer | Van Biesbroeck, George, 1880-1974 |
| Photograph Date | 1939-10-15 |
| Physical Format | Glass plate negatives; 9.9 x 7.3 cm |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf6-01652 |
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