Centralia, Washington - 1939 through 1980

Portland, Oregon - 1985 through 1987

Plymouth, Illinois - 1984 (IL Twidwells)

Eugene, Oregon - July 30, 1988

Macomb, Illinois - October 11, 1989 (IL Twidwells)

North Platte, Nebraska - June 29, 30 & July 1, 1990

    Macomb, Illinois - June 22 & 23, 1991 (IL & MO Twidwells)

Austin, Texas - June 26 & 27, 1992 (National)

Poplar Bluff, Missouri - August 14 & 15, 1993 (IL & MO Twidwells)

Poplar Bluff, Missouri - June 24-26, 1994 (National)

Springfield, Illinois - August 5 & 6, 1995 (IL & MO Twidwells)

Olympia, Washington - August 9-11, 1996 (National)

Macomb, Illinois - July 31, August 1 & 2, 1998 (National)

Colorado Springs, Colorado - June, 2000 (National)

Branson, Missouri - July 26-28, 2002 (National)

Kansas City, Kansas - June 25-27, 2004 (National)

Gatlinburg, Tennessee - July 21-22, 2006 (National)

Springfield, Illinois - June 27-29, 2008 (National)

Lexington, North Carolina - June 11-12, 2010 (National)

Estes Park, Colorado - June 15-17, 2012 (National)

Olathe, KS - June 13-15, 2014 (National)

Danville, VA - July 15-17, 2016 (National)