Citations
Postcard with a printed image of Halley and 17p Halley’s Comet stamp affixed, 1986-11-03, GBR/0180/RGO 97/5/4. Cambridge University Library. |
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Postcard with a printed image of Halley and 17p Halley’s Comet stamp affixed, 1986-11-03, GBR/0180/RGO 97/5/4. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/146793 Accessed April 04, 2025. |