When does The Atom Ant/Secret Squirrel Show return?

The Atom Ant/Secret Squirrel Show is an hour-long American Saturday morning cartoon produced by Hanna-Barbera Productions from 1965 to 1967 for NBC. In 1965, the show aired as two independent half-hour programs. In the winter, the shows combine into an hour long format. Other voices include Dick Beals, Mel Blanc, Henry Corden, Gerry Johnson, Allan Melvin, Don Messick, John Stephenson, Jean Vander Pyl, Janet Waldo.