Watch “Finally PROOF: the RED BARON CHEATS !! Vintage 'Snoopy and the Red Baron' Milton Bradley marble game,” a gameplay video on BoardGameVideo.
Description provided by David K on YouTube:

1970Marvin Glass
About Snoopy and the Red Baron, from BoardGameGeek:
Designer
Marvin Glass
Artist
Charles M. Schulz
Publisher
Milton Bradley
Categories
Mechanics