This item is a promotional item from the MAD About The Sixties trade paperback book. Produced in 1995 by Little, Brown, and Co., this item is a sealed cube of Post-It notes that feature Alfred E. Neuman and the MAD About The Sixties logo on each side. These were never sold to the general public, and were only given away to members of the MAD staff, and other employees at Little, Brown. Measuring approx. 3 1/4" by 3 1/4" by 3 1/4".