National Events in Colorado
1968 U.S. Open was held at Snowmass at Aspen (program) (newspaper – top) (newspaper – bottom)
1971 Fischer-Larsen World Championship quarterfinal match (entry ticket) held in Denver. Fischer won 6-0 and went on to defeat Boris Spassky and become World Champion in 1972. (FIDE announcement) (Bobby Fischer’s Visits to Colorado)
1977 U.S. Junior Championships in Denver hosted by the Denver Petroleum Club (1977 October – November CSCA Bulletin) (Player photo)
1984 US Masters was held in Estes Park (January 1985 Colorado Chess Informant)
1986 United States Class Championships held in Denver (January 1987 Colorado Chess Informant)
1985, 1986, and 1987 U.S. Championships held in Estes Park at the Stanley Hotel (January 1986 CSCA Informant) (January 1987 CSCA Informant) (January 1988 CSCA Informant)
1992 U.S. Championships was held in Durango
1998 U.S. Championships and 1998 U.S. Senior Open held in Denver (program) (January 1999 CSCA Informant)
