Just released - Laura Ingalls Wilder's Walnut Grove by William Anderson.
"This book traces the history of Walnut Grove as it was known by Laura Ingalls Wilder, the establishment of the town's Museum and annual Wilder Pageant, and the steady stream of visitors who stop by to revel in reminders of the heartland's past. Walnut Grove is a town with a story to tell. Full color."
Available at the Laura Ingalls Wilder Museum in Walnut Grove, MN.