In the 1940s, Truman, then the sheriff of Twin Peaks, was a founding member of the Citizens Brigade, which was formed to defend the town following the United States' entry into World War II. A very patriotic man, he named his two sons after the two sitting presidents of Word War II, Franklin D. Roosevelt and Harry S. Truman.
- Twin Peaks – season 2
- "Episode 17" (Mentioned only)
- The Secret History of Twin Peaks (Mentioned only)