Fire rescue
While Grossman was campaigning for reelection in 1967, he saw a man whose clothes were on fire. The man had been working on his car and the clothes were greasy. He was saved when Grossman and a police constable used their coats to smother the flames.
After politics
After retiring from public life in 1975, Allan Grossman served as chairman of the Criminal Injuries Compensation Board (Canada) until 1984 and he worked on his son's campaigns for the Ontario PC leadership in 1985 and afterwards served as a volunteer advisor to Larry and the Ontario Tory caucus.
In 1985, a biography was published, Unlikely Tory: The Life and Politics of Allan Grossman by Peter Oliver .
Death
Grossman died on September 1, 1991, of cancer in Toronto's Sunnybrook Health Center; he was 80 years old.