Retired Professor Emeritus, Department of Combinatorics and Optimization, University of Waterloo
For the next three years, he was employed at the Research Laboratory of General Electric, during which time he wrote about the parsing of artificial languages. ln 1967, the year of the founding of the Mathematics Faculty at the University of Waterloo, he was invited to become a Faculty member of Combinatorics and Optimization. He was promoted to Professor in 1975. His research specialty was Directed Graphs. He retired his full time position in 2005, and has since been an Adjunct Professor. He first met Bill Tutte and his wife at a conference in Saskatoon in the Summer of 1963. As a member of C&O, he was a Faculty colleague of Tutte.