The Historic Mansfield Roller Mill will participate in Mansfield’s Mushroom Festival from April 29-30. The three-story, 1880s mill will be open both days from 9 a.m. to 5 p.m. Visitors can shop, tour the mill, or see the Sunday car show. Visitors also can buy or sell bags of morels during a mushroom auction on both days. Mansfield Roller Mill is located at 6089 South Mill Road in Mansfield.