Harry Ackerman, a director, producer, writer or creator of such landmark television programs as "Studio One," "Gunsmoke," "I Love Lucy," "Burns and Allen" and "Amos and Andy," has died, a family spokesman said Monday. He was 78

Ackerman died Sunday at a Burbank hospital of pulmonary failure, said family spokesman Frank Liberman.Ackerman, a scholarly, bearded TV veteran, was a former president of the American Academy of Television Arts and Sciences. At the time of his death he was head of his own production company after having spent much of his career at NBC, CBS, Paramount and Screen Gems.

Known as the "Sire of the Sitcom," Ackerman worked in one major capacity or another on such situation comedies as "Leave it to Beaver," "Bewitched," "Gidget," "Our Miss Brooks" and "The Donna Reed Show."