The Washington County Historical Society will hold a book sale this weekend, Oct. 5-6, from noon to 4 p.m. each day at the Hay Lake School Museum in Scandia. The sale is designed to coincide with the peak fall color schedule for the northern portion of Washington County. The Hay Lake School and the Johannes Erickson Log Home are on the National Register of Historic Places and both will be open for tours. They are located on the corner of County Road 3 and Old Marine Trail North, about a mile south of Scandia. For more information, contact David Sandager at 651-433-4014 or visit www.wchsmn.org.