slide 35 - stamped date JUN81N6
slide 31 - stamped date JUN81N6 slide 37 (box ABS-011)
slide 24, 25, 28, 34, 30, 32 - stamped date JUN81N6
slide 16 - stamped date JUN81N6
slide 18 - stamped date JUN81N6
slide 15, 17, 1, 2 - stamped date JUN81N6 slide 10 stamped JUN81
slide 13, 14 - stamped date JUN81N6
slide 12 - stamped date JUN81N6
slide 8, 10, 13, 16 - stamped date JUN81N6