- MIGHTY LXII – Midwest Graph Theory Conference October 18-19, 2019 with Micah Chrisman and Murong Xu on the OSU Marion campus
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AMS Spring Sectional Meeting, Ohio State Univesity March 17-18, 2018. Special Session on Graph Theory – Focusing on the Mathematics of Neil Robertson on his 80th Birthday
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42nd Midwest Graph Theory Conference MIGHTY XLII April 28-29, 2006 at OSU Marion
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Advances in Graph and Matroid Theory Neil Robertson’s 65th Birthday Conference December 13-16, 2003 at OSU
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SIAM Conference on Discrete Math June 13-16, 2004 Vanderbilt University (Organized Mini-symposium on Graph Minors)