(maybe even hundreds?) of gaming guides.

Some are one-sided, with postcards on the other side...

some are two-sided cards or folded cards...

A lot of them are booklets that were put out by the casinos, to introduce their customers to various games...especially craps, blackjack, and roulette. But some of them also cover slots, keno, poker, race horse betting, baccarat, and even pan.

some are booklets that cover individual games...

But, out of the dozens (hundreds?) of gaming guides that we have...I think this is our first Chemin de Fer guide!