COSine 2019
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COSine 2019 was held January 18-20, 2019 in Colorado Springs, Colorado. GoH Carrie Vaughn, Mike Brotherton, Connie and Courtney Willis
| COSine 2018 | COSine | COSine 2020 |
| 2019 |
| 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. |
