Pair of 14.5x21" unused flats ©1965 although one has interior ink stamp dated "Sept 30, 1966" and the other has "Jun 27, 1967." Each box front features "Crackle!" in upper right, first box back has offer "Kids, Tell Mom She Can Collect 25¢ For Making Marshmallow Treats With Your Favorite Kellogg's Rice Krispies." Image of Rice Krispie Treats and Crackle rolling quarter toward Pop and Snap. Woody Woodpecker is also pictured as is recipe card for treat. Woody also appears on inset area on front of box holding photo image of quarter. Second box has inset image of Woody on front advertising "Woody Woodpecker Swimmer," a wind-up plastic toy that when placed in water, would swim. Back has nice large color illustration of premium and notes it was available for 50¢ and one box top. Both boxes are scored along centerfold o/w unused. Exc./N. Mint. File copies.