Verfasser
United Farmers League
3
AFL-CIO
2
Cannery & Agricultural Workers Industrial Union
2
National Farm Workers Association
2
Southern Tenant Farmers' Union
2
United Cannery, Agricultural, Packing, and Allied Workers of America
2
United Farm Workers
2
United Farm Workers Organizing Committee
2
United Farm Workers of America
2
American Civil Liberties Union
1
Communist Party of the United States of America
1
Food, Tobacco, Agricultural, and Allied Workers Union of America
1
Hacker, Louis Morton, 1899-
1
Migratory Agricultural Worker's Union
1
National Agricultural Workers Union
1
National Farm Labor Union (U.S.)
1
Share Croppers Union
1
United Farmers' Educational League
1