GM Simultaneous Exhibitions
Denver
George Koltanowski – 1958 or 1959
Hans Berliner – 1959
Larry Evans – January 20, 1963 and October 4, 1969
Samuel Reshevsky – February 26, 1963 and February 16, 1964
Bobby Fischer – April 26, 1964 (autographed entry card)
William Lombardy – March 23, 1968 (Pal Benko was originally scheduled to give the simul but had to cancel the week before. Lombardy was a last-minute replacement.)
Robert Byrne – March 31, 1968
Bent Larsen – September 18, 1968 and July 18, 1974 (announcement) (newspaper)
Svetozar Gligoric – March 24, 1971
Lubomir Kavalek – July 31, 1971
Lajos Portisch – September 1972
Walter Browne – October 22, 1975 and April/May 1976 (Photo 2) (photo 3)
Anatoly Lein – February 28, 1977
Laszlo Szabo – April 6, 1977
Victor Korchnoi – September 14, 1977 (color photo)
Tigran Petrosian – April 17, 1978
Larry Christiansen – September 14, 1978 and October 15, 2001
Larry Christiansen – March/April 1980 (Blindfold Simul)
Roman Dzindzichashvili – July 2, 1997 and 2002
Alexander Shabalov – September 18, 2003
Susan Polgar – May 11, 2006
Alex Fishbein – June 23, 2011
Alex Yermolinsky – August 31, 2012
Timur Gareyev – November 2, 2013 (Blindfold Simul)
Gata Kamsky – June 12, 2015
Timur Gareyev – October 23, 2015
Colorado Springs
Larry Evans – January 21, 1963 and October 1969 (right after the Denver Simul)
Samuel Reshevsky – February 25, 1963 and February 17, 1964
Bobby Fischer – April 28, 1964 (article 2) (article 3)
Stefan Djuric – April 28, 1992 (in Boulder April 27, 1992, in Denver April 29, 1992)
Boulder
Walter Browne – February 1, 1982
Dmitry Gurevich – February 13, 1985
Ft. Collins
Timur Gareyev – May 3, 2014 (Blindfold Simul)
Alex Fishbein – June 27, 2015
Timur Gareyev – June 17, 2022
Greeley
Timur Gareyev – October 3, 2017 (Blindfold Simul)