Following is a respresentation of the 21 Bell Slot Machine,
c. 1973. The design from the machine is courtesy of Professor Brett Niver
of Kent State University. My
brother found the design as part of one of the professor's homework
assignments (see problem 6). Professor Niver credits John
Scarne, Scarne's new complete guide to gambling, New York: Simon and
Schuster, 1974, for the design.
