Author: S.J. Axelrod, MD
Date Published: 1949
This study tracks the rise in industrial agriculture circa 1940. It summarizes that in the United States that there are 56 well defined mjor areas requring such outside labor. These areas are located in 44 out of 48 states and involve 1,000 out of 3,070 counties and the migrant streams that staff them among other facts documented at the time.