Iowa farmers get from hogs, on the average, $40 out of every $100 of their gross income. Since about 10 percent of all pork products and from 25 to 35 percent of the total output of lard are exported, Iowa farmers arc interested in the foreign outlet for their pork. The price at which pork products are sold abroad has a good deal to do with the price of hogs when sold off the farm.
Bjorka, Knute, "Pork Products in Foreign Trade" (1930). Circular. Paper 121.