COSine 2021
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COSine 2021 was to be held January 29-21, 2021, at The Hotel Eleganté in Colorado Springs, CO, but was cancelled due to the Covid-19 epidemic. All Guests of Honor agreed to attend in 2022.
| COSine 2020 | COSine | COSine 2022 |
| 2021 |
| This is a convention page. Please extend it by adding information about the convention, including dates, GoHs, convention chairman, locale, sponsoring organization, external links to convention pages, awards given, the program, notable events, anecdotes, pictures, scans of publications, pictures of T-shirts, con reports, etc. |
