Source Citation
Lowell D. Hill, Grain Grades and Standards (Champaign, IL: University of Illinois Press, 1990), 8-10.
The American Almanac and Repository of Useful Knowledge for the Year 1860 (Boston: Crosby, Nichols, and Company, 1860), 386.
The American Almanac and Repository of Useful Knowledge for the Year 1860 (Boston: Crosby, Nichols, and Company, 1860), 386.