This variety of lettuce was donated to Seed Savers Exchange by Maynard Kropf, grandson of Amish Mennonites Samuel and Ella May Kropf. They acquired it circa 1930 from a man in Stewardson, Ill., and it became a family favorite. The lettuce has tender green softball-sized heads with round leaves and a pleasantly sweet flavor. Butterhead, 50 to 60 days.