21. For two decades _ from the 1950s to the early'70s _ America was stuck on trading stamps . 22. And furthermore, trading stamp links to half a dozen different articles on different brands of trading stamps. 23. Ralph Burger attempted to reverse downward tonnage figures by reintroducing trading stamps , creating A & P's Plaid Stamps. 24. The trading stamp craze quickly faded. 25. In 1969, singer James Brown lent his name and face to Black and Brown trading stamps of San Francisco. 26. Following World War II the use of trading stamps expanded when supermarkets began issuing them as a customer incentive. 27. The economics of trading points differ little from the trading stamps of 50 years ago, despite the cyberspace makeover. 28. At the peak of trading stamp popularity in the mid-1960s, most gas stations and supermarkets were offering them to shoppers. 29. Carlson was the first entrepreneur to develop a loyalty program for the grocery chain through the issuance of trading stamps . 30. These stores'sales quadrupled from 1960 to 1968; in the only down year, 1965, it dropped trading stamps to reduce costs.
