slides 20-26, 29, 32 - stamped date JUN81N6 slides 6, 34, 35, 5, 16, 36, 136, 14, 9 (box ABS-011)
slide 37 - stamped date JUN81N6
slide 33 - stamped date JUN81N6
slide 31 - stamped date JUN81N6
slide 29, 30 - stamped date JUN81N11 slide 25 & 26 (box ABS-011)
slide 15, 17, 19 - stamped date JUN81N6
slide 12 - stamped date JUN81N6
slide 10, 8 - stamped date JUN81N6
slide 5 - stamped date JUN81N6