Los Supersónicos
Beals continued doing voices for cartoons Warner Bros. Cartoons cartoons, often as uncredited secondary characters. When Hanna-Barbera started with "The Flintstones", and then "The Jetsons", Beals provided many of the children's voices on those shows, sometimes performing several different minor characters on the same show. One of his recurring roles was as Mr. Spacely's son Arthur on "The Jetsons" with the exception of season 3.