- La Voz Mexicana. Wisconsin: Obreros Unidos. 1965-1969.
Notes: The news publication of Obreros Unidos, the migrant farm workers’ union active in Waushara, Marquette and Portage counties of Wisconsin in the 1960s; edited by David Giffey; a full run of the paper has been deposited with the State Historical Society of Wisconsin, located in Madison, Wisconsin.
- Berry-Caban, Cristobal S. Hispanics in Wisconsin: A Bibliography of Resource Materials = Hispanos en Wisconsin: Una bibliografia de materiales de recurso. Sarah H. Cooper; Donna J. Sereda, and Dale E. Treleven, with the assistance of. Madison, Wis.: State Historical Society of Wisconsin; 1981. 258 p.
Notes: “A unique, comprehensively indexed guide to manuscript and archival materials, unpublished academic papers and reports, and newspaper and journal articles.”–back cover. Each entry identifies from where the item can be borrowed. Many entries are related to labor; especially see under “Employment and Income”, “Labor Unions”, “Migrant Labor”, “Wisconsin, State of” (for governmental reports), “Obreros Unidos” (an independent Wisconsin migrant farmworker union), and also specific geographical names.
- Erenburg, Mark. “Obreros Unidos in Wisconsin”. Monthly Labor Review. 1968; 91(6):17-23.
- Martin, Philip L. “Harvest Mechanization and Agricultural Trade Unionism: Obreros Unidos in Wisconsin”. Labor Law Journal. 1977; 28(3):166-173.
Notes: Source: Hispanics in Wisconsin: A Bibliography, p. 217.
- Obreros Unidos. “The Migrant Workers Strike in Almond, Wisconsin”. In: William Kircher Papers, Walter P. Reuther Library of Labor and Urban Affairs, Wayne State University, Detroit, Mich.. 1966. Box 23, Folder 10.
- Provinzano, James. “Chicano Migrant Farm Workers in a Rural Wisconsin County”; 1971.
Notes: Ph.D., University of Minnesota, 1971. 154 p. An anthropological look at the social structure networks among the Chicano migrant farm workers in a large, rural, central Wisconsin county, which is only identified as “Centre County” in this dissertation. One can speculate, however, that Portage County, Wisconsin, is the county involved here because the migrant farm workers studied were almost exclusively involved with harvesting cucumbers for many nearby canneries and were involved with organizing into a labor union at the time the author was doing his research. For a fuller abstract, see Dissertation Abstracts International, 1972, 32/08, p. 4374-B.
- Rodrigues, Marc Simon. “Cristaleno Consciousness: Mexican-American Activism between Crystal City, Texas, and Wisconsin, 1963-80”. In: Mansbridge, Jane and Morris, Aldon, editors. Oppositional Consciousness: The Subjective Roots of Social Protest. Chicago, Ill.: University of Chicago Press; 2001; pp. 146-169.
Notes: This article looks at how Texas Mexican migrant farm workers from the area around Crystal City, Texas, who came every year to Wisconsin for seasonal agricultural work, were influenced by the “oppositional consciousness” traditions of the Wisconsin labor movement.
- Rodriguez, Marc Simon. “Obreros Unidos: Migration, Migrant Farm Worker Activism, and the Chicano Movement in Wisconsin and Texas, 1950-1980”; 2000.
Notes: Ph.D. thesis, Northwestern University, 2000. 326 p.
- —. “Obreros Unidos: Migration, Migrant Farm Worker Activism, and the Chicano Movement in Wisconsin and Texas, 1950–1980”; 2001.
Notes: Ph.D. thesis, Northwestern University, 2001. 326 p. [Available at the State Historical Society of Wisconsin, in their book collection, at call number HD5856.W6/R63/2000]; OCLC 46705831.
- Salas, Jesus and Giffey, David. Lucha por la justicia: Movimiento de los trabajadores migrantes en Wisconsin = Struggle for Justice: The Migrant Farm Worker Labor Movement in Wisconsin. David Giffey, Photos by. Madison, Wis.: Wisconsin Labor History Society; 1998. 15 p.
Notes: Accompanying booklet for a traveling photo exhibit about Obreros Unidos, a migrant farm worker union active during the 1960s in Wisconsin’s Waushara, Marquette and Portage counties; booklet text in Spanish and English. Contact David Giffey (Arena, WI) or the Wisconsin Labor History Society (Milwaukee, WI) to arrange to show the exhibit.
- Valdes, Dennis Nodin. Al Norte: Agricultural Workers in the Great Lakes Region, 1917-1970. 1st ed. Austin, Tex.: University of Texas Press; 1991. 305 p. (Mexican American Monographs; no. 13). Notes: A social history of Latino migrant farmworkers, including their efforts to form labor organizations, throughout the upper Midwest (Illinois, Indiana, Michigan, Minnesota, Ohio and Wisconsin) from their entry into the region during World War I up to 1970.