When does Dastardly and Muttley in Their Flying Machines return?

The show focuses on the efforts of Dick Dastardly and his canine sidekick Muttley to catch Yankee Doodle Pigeon, a carrier pigeon who carries secret messages. The title is a reference to the film and song Those Magnificent Men in Their Flying Machines (1965) The original working title of the show was Stop That Pigon. The show was originally broadcast as a Saturday morning cartoon, airing from September 13, 1969, to January 3, 1970.