Issued in panel of 8 cards in box of Kellogg's All Wheat, there are actually 3 series of 150 cards, the promotion went from 1945 to 1947 I've put the 1st series in 1945 the 2nd in 1946 and the 3rd in 1947 although I do not know if they were issued like that. Each of the series is subdivided in theme containing 15 to 30 cards each.