Kenner magazine advertisement for the Snoopy Toothbrush. This was found in the December 1973 issue of Cincinnati Magazine.
The ad reads:
Snoopy makes it fun to brush your teeth!
Battery operated – no plug-in.
The ad also has the following copyright information:
1973 United Feature Syndicate, Inc.
1973 GENERAL MILLS FUN GROUP, INC.
by its Div., KENNER PRODUCTS, Cincinnati, Ohio 45202
The Snoopy Toothbrush from the 1973 Kenner Toy Fair catalog: