Cal Poly Pomona began as a satellite campus of Cal Poly San Luis Obispo in 1938 when a completely equipped school and farm were donated by Charles Voorhis and his son Jerry Voorhis of Pasadena, California, and was initially called the Voorhis Unit. The W.K. Kellogg Foundation then donated an 812-acre (329 ha) horse ranch in Pomona, California to Cal Poly San Luis Obispo in 1949. Located about one mile (1.6 km) from the Voorhis campus, the two became known as Cal Poly Kellogg-Voorhis.