Call the Ironton Library, have them search old phone books for EAG.
The 4-5-6 dice are used for cheating. I have an old Mason catalog around here somewhere. They advertised all kinds of cheat dice, as did BC Wills and HC Edwards.

Bud Jones broke up the Christy Jones Co over Bill Christy making bad dice and shipping them to Mississipi.
BTW, At least one current distributor will still make them for you.