United States. Congress. House. Committee on Agriculture
Thomas F. O'Brien
Lester W. Strauss
United States. Congress. Senate. Committee on Agriculture and Forestry
United States. Congress. House. Select Committee on Expenditures in the War Department.
Anton Schweizer
Ernesto Zepeda Rojas
United States International Trade Commission
Véronique Brunet
Manuel A. Fernandez
Sergio González M.
United States. Congress. House. Committee on Military Affairs.
Ismael Espinosa V.
Allin Cottrell
Charles W Bergquist
United States. Agency for Toxic Substances and Disease Registry
Chilean Nitrate Committee. New York.