A Celebration of Group Theory, Dedicated to the memory of Wilhelm Magnus, New York NY, September 28-29, 2007
Geometric and Probabilistic Methods in Group Theory and Dynamical Systems, College Station TX, November 3-6, 2005,
AMS Sectional Meeting, Special Session on Geometric Methods in Group Theory and Semigroup Theory, Lincoln NE, October 21-23, 2005
Asymptotic Group Invariants and their Applications, Special Year, Texas A&M, College Station TX, 2004/2005
AMS Sectional Meeting, Special Session on Probabilistic and Asymptotic Aspects of Group Theory, Athens OH, March 26-27, 2004
Groups and Dynamics, Fall Workshop, College Station TX, December 5, 2007
Groups and Dynamics, Fall Workshop, College Station TX, November 18, 2006
Asymptotic Group Invariants and their Applications, Spring Workshop 1, College Station TX, February 26, 2004
Asymptotic Group Invariants and their Applications, Fall Workshop 2, College Station TX, December 8, 2004
Asymptotic Group Invariants and their Applications, Fall Workshop 1, College Station TX, November 6, 2004