prepared under the supervision of Harvey J. Zimmerman
U.S. Government Printing Office
1915-
Department Bulletin / United States Department of Agriculture
No. 131, 134, 140, 170-177
1914-15 , 1915-16 , 1918-19 , 1932-33 , 1933-34 , 1934-35 , 1935-36 , 1936-37 , 1937-38 , 1938-39 , 1939-40
Available at 8 libraries