Morgan died of pneumonia at his home in Brentwood, California on Wednesday (07Dec11).
He is best known for portraying fatherly Colonel Potter on the long-running hit American TV series M*A*S*H, a role which earned him an Emmy Award in 1980.
The actor was born in 1915 in Detroit, Michigan and he went on to study pre-law at the University of Chicago in Illinois before taking up a two-year stint on Broadway in the original production of Golden Boy.
Morgan later starred opposite Elvis Presley in Frankie and Johnny, veteran John Wayne in The Shootist, actor James Garner in Support Your Local Gun Fighter, and even Tom Hanks and Dan Aykroyd in Dragnet.
He also appeared in the TV shows December Bride and Dragnet and made a number of guest appearances in TV hit like 3rd Rock from the Sun, The Twilight Zone, Murder, She Wrote, Gunsmoke, The Love Boat and The Partridge Family.
He last appeared in a comedy short titled Crosswalk in 1999.