Alfred Carlton Gilbert (February 13, 1884 – January 24, 1961) was an American inventor, athlete, toy-maker and businessman. Born in Salem, Oregon and died in Boston, Massachusetts, Gilbert is best known as the inventor of the Erector Set.
By 1935, he had sold more than 30 million of the sets. He also added chemistry sets, microscope sets, and other educational toys to his product line, accumulating more than 150 patents during his 50-year career. In 1938, he acquired the rights to the American Flyer toy train line from W. O. Coleman and moved their production from Chicago to New Haven. At the same time, he adopted a 3/16 scale for this train line while keeping the three-rail O-gauge track now associated with Lionel. Following World War II, O-gauge track was abandoned in favor of two-rail S-gauge track. Gilbert was lauded for his strict adherence to scale realism, making American Flyer trains look more real and less toylike.
Gilbert is also credited with originating the concept of providing benefits for his employees, co-founded the Toy Manufacturers of America organization and was its first president.
Frustrated that invention was an important part of American society but not taught in schools, in 1941 Gilbert opened the Gilbert Hall of Science in New York City, an early science and technology museum. It served the dual purpose of promoting interest in science and selling Gilbert's products.
In 1950–1951 he sold the Gilbert U-238 Atomic Energy Laboratory.
A museum in Gilbert's birthplace of Salem, Oregon, A. C. Gilbert's Discovery Village, is named in his honor. It opened in 1989. A biography titled The Man Who Changed How Boys and Toys Were Made was published in 2002.
The CBS television movie The Man Who Saved Christmas is a dramatization of A.C. Gilbert’s campaign to save Christmas during the years 1917 and 1918 when America was involved in World War I. He was portrayed by Jason Alexander. The film takes several historical liberties. It debuted December 15, 2002.