Postcard showing a coupon for Kellogg's Whole Wheat Biscuits, c. 1933 Caption on front: Valuable Coupon Take this coupon to your grocer and purchase a package of Kellogg's whole wheat biscuit and they will give you another regular size package Free! "Only good for 30 days from date of post mark" To dealers: This coupon when terms of this arrangement have been complied with, will be reclaimed by us at the retail price of Kellogg's Whole Wheat Biscuit. Kellogg Company, Battle Creek, Michigan Sent to: Clayton Kimball Big Flats NY Sent in: 1933