In many ways, milling flour hasn’t changed much in 150 years. Clean the wheat, grind it and sift it (if you want “white” flour). Some good folks here in Kansas have built a replica of an 1880s flour mill — from oak and cottonwood trees on the building site — and filled it with vintage equipment that they’ve carefully restored. On special events, club members still run the equipment to make flour or corn meal. You can read about the details of the restoration in Recreating a 19th Century Four Mill. If you’re interested in learning more about the mill or visiting it, check out the Meriden Antique Engine and Threshers Association Flour Mill. And The Society for the Preservation of Old Mills has interesting information on all types of antique mills.