Letter dated March 20, 1997, written by John Burton to John Groom regarding the Center for the Analysis of Conflict at the University of Kent at Canterbury,
Letter dated February 14, 1996, written by John Burton to Rich Rubenstein regarding University Press publishing Burton's Introduction to CR: Language and Processes.
Letter dated February 18, 1980, written by John Burton to the Ambassador of the Soviet Union regarding the confiscation of some of Burton's papers by Soviet authorities.