by 1967, howard hughes came into the state of nevada and one of the effects of hughes in the state of nevada was that it legitimized gaming operations. by 1974, harrah's had gone public on the stock exchange. that heralded the new era of gaming throughout nevada and eventually, of course, throughout the united states aired -- united states. what we have here are things from our educational collection , which allows people to look at things, physically hold them, handle them. the purpose is to gather, protect, and present the history of gaming. and so this allows us to give demonstrations of various types of, in this instance, things that are considered to be special work or cheating devices. i take a magnet here, i have a dice cube. it is what they call magnetic dice. it can sometimes also work in an opposite direction. this is a magnetized lead ball. as you can see, it will stick to the magnet. this is an unprocessed dice cube out of the 20's. and this cube here is very interesting because it is what you call a tap die. it has not been spotted yet, but you can see there is a mechanic