I did a search and found a site with a list ofgame suppliers...http://www.silcom.com/~tomjolly/design2.��Good Luck!
The site you refer to (self help) is the vendor I think you want the publisher (manufacturer) or printer. This is such a generic item - you might try to find a comparable item at your local stationary store or learning center . The only way you can possibly find the maker is to order these and see if there is any trademark or Identity on the box the cards come in. Good Luck!