Toy farm equipment became popular in the 1920s, ironically, exactly at the time when most Americans no longer lived on farms. Manufacturers made the first toy tractors, balers, plows, and other equipment of cast iron. As the 20th century continued, examples of farm toys appeared in slush metal, tin, rubber, vinyl, and plastic. By the 1970s, farm toys attracted not just many adult collectors but it own museum located in Dyersville, IA, home of several modern farm toy manufacturers such as Ertl, SpecCast, and Scale Models.