High Quality Content by WIKIPEDIA articles! Harry Morgan (born Harry Bratsberg. April 10, 1915) is an American actor. Morgan is well-known for his roles as Colonel Sherman T. Potter on M*A*S*H (1975–1983), Pete Porter on both Pete and Gladys (1960–1962) and December Bride (1954–1959), Detective Bill Gannon on Dragnet (1967–1970), and Amos Coogan on Hec Ramsey (1972–1974). He has appeared in more than 100 films.