A modeling compound used by young children for art and craft projects at home and in school. Composed of flour, water, salt, boric acid, and mineral oil, the product was first manufactured in Cincinnati, Ohio, as a wallpaper cleaner in the 1930s. When a classroom of children began using the wallpaper cleaner as a modeling compound, the product was reworked and marketed to Cincinnati schools in the mid-1950s.
The former home of said modeling compound is what you seek.