Those old enough to remember the 1960s and 1970s will remember trading stamps. For those that don't recall, upon purchase at the grocery store, gas station, or really an merchant, they'd give you a corresponding amount of stamps you could later trade in for stuff. They were sort-of the rewards card of the day - they weren't necessarily linked to the store itself - but you'd go there because their sign would say something like "We Give Gold Strike Stamps".
You'd put your stamps in a book, and dream big dreams about the wondrous things you will redeem them for. Will it be a hi-fi, a dinette set, a vacuum cleaner? In a time before credit cards and when families actually stuck to a budget, redeeming stamps was a big deal.
So, I've scanned some pages from a 1969 Gold Strike Stamps catalog. Basically, the merchandise in here could be found at your local Redemption Center; although you could redeem by mail. Enjoy.