Completed stamp booklets could be redeemed at May Company for $3 credits toward merchandise purchases at May Company stores. The trading stamp program was administered by the May Company owned Eagle Stamp Company of St. Louis from 1903 to 1987.
The trading stamp program, which allowed customers to redeem completed stamp booklets for $3 in merchandise credit at May Company stores, was run by the May Company's Eagle Stamp Company in St. Louis from 1903 to 1987.