NOT KNOWN FACTUAL STATEMENTS ABOUT LAUGHING GAS

In the Betty Boop cartoon "Ha! Ha! Ha!" opens with supposedly Max Fleischer's hand drawing Betty Boop on the sheet of paper. When Max leaves the studio, Koko will come out in the inkwell for that very last time, and commences eating the sweet bar Max had remaining about the table. Shortly he develops a toothache, so Betty draws a dentist place to f