In the 70s, some brilliant General Mills scientist hit upon the idea of coating cereal with "an excipient of a drink mix" (in the words of Wikipedia) which would dissolve on contact and flavor the milk. Crazy Cow came in chocolate and strawberry. One edition featured Star Wars trading cards, which were particularly valuable because they weren't available anywhere else.
Description: 1953 BETTY CROCKER vintage print advertisement "That fourth meal" -- That fourth meal can be so easy ... Betty Crocker of General Mills -- Size: The dimensions of the full-page advertisement are approximately 10.5 inches x 14 inches (27 cm x 36 cm). Condition: This original vintage full-page advertisement is in Very Good Condition unless otherwise noted.