Stewart continued his dental practice for over 58 years until retiring in 1960 at the age of 83. The General Stewart School, an elementary school in Lethbridge was named for him in 1957, and the same year he was awarded an honourary law degree from the University of Alberta. Stewart would return to Belgium for the 50th anniversary of the Liberation of Mons in 1968, receiving the "Citoyen d’Honneur".