Child Labor in Oklahoma
Crawford, Suzanne J. and Lynn R. Musslewhite. "Kate Barnard, Progressivism, and the West," in An Oklahoma I Had Never Seen Before: Alternative Views of Oklahoma History, ed. Davis D. Joyce. Norman: University of Oklahoma Press, 1994.
Freedman, Russell. Kids at Work: Lewis Hine and the Crusade Against Child Labor. HMH Books for Young Readers, 1998.
Gorn, Elliot J. Mother Jones: The Most Dangerous Woman in America. Hill and Wang, 2002.
Keso, Edward Elmer. The Senatorial Career of Robert Latham Owen. Gardenvale P.Q., Canada: Garden City Press, 1938.
Musslewhite, Lynn R. and Suzanne J. Crawford. One Woman's Political Journey: Kate Barnard and Social Reform, 1875–1930. Norman: University of Oklahoma Press, 2003.
Nordström, Alison and Elizabeth McCausland. Lewis Hine. D.A.P., 2012.
Reese, Linda W. Women of Oklahoma, 1890–1920. Norman: University of Oklahoma, 1997.
Rothstein, Arthur. Documentary Photography. Focal, 1986.
Urofsky, Melvin I. Louis D. Brandeis: A Life. New York: Pantheon Books, 2009.
The Encyclopedia of Oklahoma History and Culture
Lynn Musslewhite and Suzanne Jones Crawford, "Barnard, Catherine Ann," The Encyclopedia of Oklahoma History and Culture. http://www.okhistory.org/publications/enc/entry.php?entry=BA020 (accessed September 13, 2016).
Larry O'Dell, "Labor, Organized," The Encyclopedia of Oklahoma History and Culture. http://www.okhistory.org/publications/enc/entry.php?entry=LA0 (accessed September 13, 2016).
Belcher, Wyatt W. “Political Leadership of Robert L. Owen.” The Chronicles of Oklahoma 31 (Winter 1953-1954): 361-71.
Brown, Kenny L. “A Progressive from Oklahoma: Senator Robert Latham Owen, Jr.” The Chronicles of Oklahoma 62 (Fall 1984): 232-65.
Edmondson, Linda and Margaret Larason, "Kate Barnard: The Story of a Woman Politician," The Chronicles of Oklahoma 78 (Summer 2000).
Musslewhite, Lynn and Suzanne Jones Crawford, "Kate Barnard and Feminine Politics in the Progressive Era," Mid-America 75 (1993).