Citation
Unknown. 1939. “Household electric heaters used by Lloyd E. Davis in farrowing houses to prevent loss of early spring pigs. These early pigs can usually be marketed druing late August or Early September, which has been the time of highest prices for hogs during the past 10 years. Frankfort, Indiana..” Special Collections, USDA National Agricultural Library. Accessed August 25, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/12246.