 The 32nd National was held at the Donald E Stephens Convention Center in Rosemont, Illinois, August 3–7, 2011 and included a total of 89 current and former professional athlete autograph signers.The 31st annual convention was held August 2010 at the Baltimore Convention Center.In addition to approximately 600 dealer booths which buy, sell and trade sports memorabilia, the National is host to over 60 celebrity autograph guests during its week-long run including names such as Cal Ripken, Jr., Bob Gibson, and John Havlicek.