The American Milking Shorthorn Society (AMSS) incorporated in 1948 and took over the registration and promotion of Milking Shorthorns. In April 1950, the Milking Shorthorn office moved from Chicago to Springfield, Missouri. Milking Shorthorns were declared a dairy breed in 1969 and in 1972 became members of the Purebred Dairy Cattle Association. The Society national office moved to its present home, Beloit, Wisconsin, in 1986