• 1978 – Denver, Colorado, USA
• 1984 – Adelaide, South Australia, Australia
• 1988 – New Delhi, India
• 1991 – Montpellier, France
• 1995 – Salt Lake City, Utah, USA
• 1999 – Townsville, Queensland, Australia
• 2003 – Durban, South Africa
• 2008 – Hohhot, Inner Mongolia, Peoples Republic of China
• 2011 – Rosario, Santa Fe, Argentina

Past Congress Proceedings
Resolutions from Prior Congresses
IRC Historical Notes (PDF)
Photos