The Laura Ingalls Wilder House is a historic house museum at 3060 Highway A in Mansfield, Missouri. Also known as Rocky Ridge Farm, it was the home of author Laura Ingalls Wilder from 1896 until her death in 1957. The author of the Little House on the Prairie series, Wilder began writing the series while living there. The house, together with the nearby Rock Cottage on the same property, represents one of the few surviving places where she resided. Shortly after her death local residents initiated legal steps to acquire the house through the incorporation of a non-profit organization to preserve her legacy. Owned by the Laura Ingalls Wilder Home Association, the house is open to the public for tours. It was designated a National Historic Landmark in 1991.