Evolution of the sickle and the flail--33-Horse Team Combined Harvester-- Walla Walla, Washington by Elmer Underwood, born Fulton County, IL 1859-died St. Petersburg, FL 1947, Bert Underwood, born Oxford, IL 1862-died Tucson, AZ 1943, Underwood and Underwood, active 1881-1900s — VisualArtsDB

Evolution of the sickle and the flail--33-Horse Team Combined Harvester-- Walla Walla, Washington by Elmer Underwood, born Fulton County, IL 1859-died St. Petersburg, FL 1947, Bert Underwood, born Oxford, IL 1862-died Tucson, AZ 1943, Underwood and Underwood, active 1881-1900s — VisualArtsDB