Walter Massey

Walter Edward Hart Massey (August 19, 1928 - August 4, 2014) was a Canadian actor. He was best known for voicing Principal Herbert Haney on the animated series "Arthur" and The Doctor in the English version of "The Mysterious Cities of Gold". 
He also played Dr. Donald Stewart on the 90's version of "Lassie". He had numerous roles on stage, movies, and television for more than five decades. He was related to actor Raymond Massey.
Massey died in Montreal, Quebec from an unknown illness, aged 85.