NOT KNOWN FACTUAL STATEMENTS ABOUT LAUGHING GAS

Within the Betty Boop cartoon "Ha! Ha! Ha!" opens with supposedly Max Fleischer's hand drawing Betty Boop on a sheet of paper. When Max leaves the studio, Koko arrives out from the inkwell to the final time, and starts off taking in the sweet bar Max had still left to the desk. Shortly he develops a toothache, so Betty attracts a dentist place to w