The Plainsman Museum, 210 16th St. in Aurora, is the Hamilton County Historical Society’s museum, opened July 4, 1976, with more than 60,000 artifacts, an agricultural museum, a one-room schoolhouse, the Bates House and a blacksmith shop (outbuildings open April to October). Open Tuesday to Friday 9 to 4 and Saturday 9 to 2. Phone (402) 694-6531.