Which food company pioneered the first major customer loyalty program using collectible cards that eventually became cultural phenomena and highly valuable collectibles?

In the competitive food industry, customer loyalty programs have evolved dramatically over the decades. Some iconic food brands pioneered innovative approaches that revolutionized how we think about customer retention. This trivia question explores a groundbreaking loyalty program that changed the industry landscape and created a blueprint that many modern food loyalty programs still follow today.

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Coca-Cola with their bottle cap points system (1920s)
Ralston Purina with Wheat Honeys and Rice Honeys cereal box tops (1950s)
Cracker Jack with their surprise toys inside every box (1912)
Cigarette companies that included baseball cards in their packages (1880s)