International Puzzle Exchange
The International Puzzle Party was first established in 1978 by noted puzzle collector and scholar, Jerry Slocum.
He hosted the first gathering in his living room for a hand-picked selection of collectors.
Tokyo – IPP 15 – 1995
San Francisco – IPP 17 – 1997
London – IPP 19 – 1999
Los Angeles – 20 – 2000
Chicago – IPP 23 – 2003
Boston – IPP 26 – 2006
Ottawa – IPP 35 – 2015