S & H Green Stamps
Granted, my mother collected them at the end of their era, but I do remember shops that advertised giving them out and the booklets wherein one could paste the stamps and redeem them later for other goods.
Kinda like Marlboro Miles, but without the lung cancer.
You mean Eagle Stamps? That makes me feel old, too.
I meant S&H Green Stamps.
Apparently, Eagle Stamps were a May Co. thing, which would relate to your St. Louis ancestral memory.