By 1915, introduction of the firm's Whitman Sampler, a boxed assortment of the company's best selling chocolates, established the marketing innovation as America's favorite confection collection.

During the 1920s, Whitman debuted its Salmagundi chocolate combination packaged in elegant lithographed tin boxes made by the Tin Decorating Company of Baltimore. Established in 1914, Tin Deco produced tobacco, candy, cake and medicine containers, eventually becoming the largest tin decorating factory worldwide. The company was noted for its use of art provided by several famous artists including Czech illustrator and designer Alphonse Mucha (1860-1939) whose works were chosen to decorate Salmagundi boxes.