2019
East Bay Regional Park District, San Francisco Bay Area, California
Midpeninsula Regional Open Space District, Los Altos, California
May 5 – 9, 2019
• Website
2018
Charleston County Parks, Charleston, South Carolina
May 21 – 23, 2018
• Website [PDF]
2017
Stark Parks, Canton, Ohio
June 8 – 9, 2017
• Website
2016
Cleveland Metro Parks, Cleveland, Ohio
June 13 – 17, 2016
2015
Huron-Clinton Metro Parks, Brighton, Michigan
Oakland County Parks, Waterford, Michigan
June 8 – 12, 2015
2014
Orange County Parks, Irvine, California
April 29 – May 2, 2014
• Website
2013 Canada
Metro Vancouver Regional Parks, British Columbia, Canada
Metro Vancouver and co-host Capital Regional District
June 9 – 15, 2013
• PDF
2012
Three Rivers Park District, Plymouth, Minnesota
2011
The Northern Virginia Regional Park Authority, Fairfax Station, Virginia
Date unknown
• Website
2010
2009
2008
Tualatin Hills Park & Recreation District, Portland, Oregon
September 8 – 10, 2008
• PDF
2006
East Bay Regional Park District, San Francisco Bay Area, California
May, 2006
• PDF
2005 – 1972
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