On the box
Katie Parsons
Overview from https://www.glowingeyegames.com/more-to-mexican-train-dominoes/ Mexican Train Dominoes’ origin is shrouded in history. Some people say it was developed in Cuba, others in China, but what we do know is that Roy and Katie Parsons from Newport Coast, California, developed the game we know today. The couple copyrighted the rules for the game Train in 1994, which only lead to its renown and distribution,…
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especially when the Puremco Company got a hold of the rights. Its popularity only grew; the rest is history.
Biography and credits from BoardGameGeek.