From The Public Domain Movie Database: Betty travels to an invention show just full of crazy inventions. Betty and her friends demonstrate various doodads and gadgets.

The Betty Boop Cinderella cartoon is already up on this site (http://www.archive.org/details/bb_poor_cinderella). This new copy isn't perfect, but it might be more true to the Fleischer style and the Cinecolor of the 1930s.