http://www.etonline.com/news/116562_...ies/index.html

A prolific character actor, Morgan appeared in a number of TV shows and more than 100 movies in a variety of roles, from Western bad guys to sheriffs and police chiefs. He earned a best supporting actor in a comedy series Emmy in 1980 for his role as Colonel Potter on M*A*S*H, and told the Archive of American Television of his character, "He was firm. He was a good officer and he had a good sense of humor. I think it's the best part I ever had."
He was 96 years old! Good long life. Great actor. Loved him in both MASH and Dragnet.