SOSSI Annual Conventions
1953, July 19Irvine Ranch, Santa Ana, California - National Jamboree
1955, August 21Niagara-on-the-Lake, Ontario, Canada - World Jamboree
1957, July 14Valley Forge, Pennsylvania - National Jamboree
1957, August 10Sutton Coldfield, Wks., United Kingdom - World Jamboree
1960, July 24Colorado Springs, Colorado - National Jamboree
1964, July 19Valley Forge, Pennsylvania - National Jamboree
1967, August 6Farragut State Park, Idaho - World Jamboree
1969, July 24Farragut State Park, Idaho - National Jamboree
1973no record of meetings at National Jamborees
1977, August 6Moraine State Park, Pennsylvania - National Jamboree
1981, August 2Fort A. P. Hill, Virginia - National Jamboree
1985, July 28Fort A. P. Hill, Virginia - National Jamboree
1986, May 30Chicago, Illinois - AMERIPEX '86
1987, April 4Nashville, Tennessee - NASHPEX 1987
1988, October 15Los Angeles, California - SESCAL
1989, August 6Fort A. P. Hill, Virginia - National Jamboree
1990, May 27Rosemont, Illinois - COMPEX 1990
1991, June 22Aurora, Colorado - TOPEX '91
1992, May 23Chicago, Illinois - World Columbian 1992
1993, June 26Milwaukee, Wisconsin - TOPEX '93
1993, August 8Fort A. P. Hill, Virginia - National Jamboree
1994, January 8Mesa, Arizona - ARIPEX 1994
1995, September 1Baltimore, Maryland - BALPEX 1995
1996, June 9Toronto, Canada - CAPEX '96
1997, June 1San Francisco, California - PACIFIC '97
1998, May 2Oklahoma City, Oklahoma - OKPEX 1998
1999, May 15Denver, Colorado - ROMPEX 1999
2000, May 23London, United Kingdom - LONDON 2000
2001, May 26Chicago, Illinois - COMPEX 2001
2002, September 21Richmond, British Columbia, Canada - PIPEX 2002
2003, September 20King of Prussia, Pennsylvania - PNSE
2004, April 24Dallas, Texas - TEXPEX 2004
2005, January 22Tucson, Arizona - ARIPEX 2005
2006, May 28Washington, District of Columbia - WASHINGTON 2006
2007, August 10Portland, Oregon - APS STAMPSHOW 2007
2008, May 17Rochester, New York - ROPEX 2008
2009, January 16San Diego, California - SANDICAL 2009
2010, May 15Chelmsford, United Kingdom - EUROSCOUT 2010
2011, June 25Brookfield, Wisconsin - NTSS 2011
2012, August 11Irvine, California - AMERICOVER 2012
2013, March 16Cleveland, Ohio - Garfield-Perry March Party
2014, May 17Denver, Colorado - RMSS 2014
2015, May 23London, Ontario, Canada
2016New York City, New York - NY 2016
2017Portland, Oregon - PIPEX 2017
2018St. Louis, Missouri - St. Louis Stamp Expo