Don't Take My Boop Boop Be Doop Away (1933) : Mae Questel : Free Download, Borrow, and Streaming : Internet Archive
Betty Boop's Rise to Fame (Short 1934) - IMDb
Betty Boop - Wikipedia
TIL that the actress who played Aunt Bethany in National Lampoon's Christmas Vacation was the same lady who provided the voice for Betty Boop and Olive Oyl : r/todayilearned