Sir Tyrone Guthrie letter. Guthrie, Tyrone Drama Brown, Marvin Guthrie, Tyrone Letter written by Tyrone Guthrie to Marvin Brown, Associate Dean of Arts at the University of Waterloo. The letter is dated May 10, 1970, and discusses Guthrie's availability and services. May 10, 1970 1 leaf https://archives.uwaterloo.ca//letter-to-marvin-brown-university-of-waterloo-waterloo-ont-from-sir-tyrone-guthrie SCA54-GA30 https://archives.uwaterloo.ca//university-of-waterloo-special-collections-archives University of Waterloo. Special Collections & Archives