1973 - Woody Auction - Mr. and Mrs. Wilson Reed Collection
1979 - Woody Auction - Wilson Reed Collection
1980 - Woody Auction - Cooley and Marge Miller Collection
1981 - Woody Auction - Cooley & Marge Miller and Jim & Marlene Mogg Collections
1984 - Burns Auctions - Leonard Harsch Collection
1986 - Woody Auction - Ken Osborn and Helen James Collections
1987 - Larue Auctions - Joan Westerfield Collection
1988 - Woody Auction - Mr. & Mrs. Ivan Mitchell and Mr. & Mrs. Sherman Kell
1989 - Seeck Auctions - Tony and Norene Duran Collection
1992 - Woody Auction - Don and Connie Moore Collection
1993 - Burns Auctions - Mr. and Mrs. Francis DiFilippo Collection
1995 - Woody Auction - Mr. Alessio and Mr. and Mrs Brown
1996 - Seeck Auctions - Bob and Faye Allaire Collection
1998 - Seeck Auctions - Bobby and Joyce Seale Collection
1999 - Seeck Auctions - Floyd and Cecil Whitley Collection
2001 - Burns Auctions - Mr. and Mrs. Danny McFalls Collection
2002 - Woody Auction - Doug and Karen Engel Collection
2003 - Seeck Auctions - Barton and Sue Dooley Collection
2004 - Seeck Auctions - Dr. Jack and Bonnie Pritchard Collection
2005 - Seeck Auctions - Carl and Ferne Schroeder Collection
2006 - Wroda Auctions - Pete and Paula Bingham Collection
2007 - Wroda Auctions - John Muehlbauer and Jan Lambert Collection
2008 - Wroda Auctions - Judy Maxwell Collection
2009 - Wroda Auctions - John and Jeanette Rogers Collection
2010 - Seeck Auctions - Joyce Seale Collection
2011 - Seeck Auctions - Emmett and Dorothy Morgan Collection
2012 - Seeck Auctions - Arnold and Dorothy Snell Collection
2013 - Seeck Auctions - Paul and Dee Bekemeier and Roy and Charlene Hieger Collections
2014 - Seeck Auctions - Tom and Ann Bumpass and Beverly Franzen Collections
2015 - Seeck Auctions - Bud Martin Collection
2016 - Burns Auctions - Kathi and Galen Johnson Collection
2017 - Seeck Auctions - Les and Patti Harris and Christina Katsikas Collections
2018 - Seeck Auctions - Carlton and Jane Tarkington Collection
2019 - Seeck Auctions - Judy and Ed Maxwell and Dennis and Linda Naphin Collections
2020 - Convention and auction canceled due to COVID-19
2021 - Seeck Auctions - Travis Reyan Collection held at HOACGA Lite in Mason City IA due to COVID-19
2022 - Seeck Auctions - Carroll Cook and Robert Grissom Collections
2023 - Seeck and Wroda Auctions - Melphia and Rabon Hall Collection
