Right, that was what I was thinking.

What were are looking for is to make a display of chips that were "on the tables" in 1975. My thinking, and maybe I am wrong, is that the number of casinos open in 1975 either on the strip of downtown is not THAT many. And the casinos only usually had 1 $1 and 1 $5 chip, not like the hard rock today with 100's of $5's on their tables. I think I want to break them up into 2 displays, one for the strip and 1 for downtown.

So how about a list of all the casinos that were open in 1975? Any ideas where something like that can be had? Then I can figure out which chip would have been on the tables at teh right time.