| Ewers, John C. "The Emergence of the Named Indian Artist in the American West". American Indian Art Magazine, vol. 6, no. 2 (spring 1981). 1981. | 52-55 | 1981 | Artists include Four Bears (Mato Tope), -1837; Yellow Feather, active 1834; Geneskelos, -approximately 1876; Johnny Kit Elswa; and Choh. Includes bibliographical references. | |
| Holm, Bill. "Four Bears's Shirt: Some Problems with the Smithsonian Catlin Collection". In: Horse Capture, George P. and Suzanne G. Tyler (editors). Artifacts/Artifakes: the Proceedings of the 1984 Plains Indian Seminar. Cody, Wyoming: Buffalo Bill Historical Center. 1992. | 43-59 | 1992 | Includes bibliographical references. | |
| Klann, Kilian. Mató-Tópe: Chief der Mandan, Künstler, Regenmacher und Freund der Weissen. Wyk auf Foehr, Germany: Tatanka Press. 2007. | | 2007 | Includes bibliographical references and index. | |
| Kusserow, Karl and Alan C. Braddock. Nature's nation: American Art and Environment. Princeton, New Jersey: Princeton University Art Museum. 2018. | 247-248, 251 | 2018 | Published on the occasion of the exhibition "Nature's Nation: American Art and Environment" held Princeton University Art Museum, Princeton, New Jersey, October 13, 2018-January 6, 2019; Peabody Essex Museum, Salem, Massachusetts, February 2, 2019-May 5, 2019; and Crystal Bridges Museum of American Art, Bentonville, Arkansas, May 25, 2019-September 9, 2019. Includes bibliographical references and index. | |
| Lester, Patrick D. ~The Biographical Directory of Native American Painters. Tulsa, Oklahoma: SIR Publications. 1995. | 184 | 1995 | Includes tribal index and bibliographical references. | |
| McCoy, Ron. "Of Forests and Trees: John C. Ewers's 'Early White Influence upon Plains Indian Painting' Re-Examined". American Indian Art Magazine, vol. 27, no. 1 (winter 2001). 2001. | 62-71 | 2001 | "Contends that an article by anthropologist John C. Ewers on the work of two Mandan warrior-artists, Four Bears and Yellow Feather, is a reminder to contemporary scholars not to generalize about the influence of Western art on Native American cultures." Includes bibliographical references. | |
| Minor, Kimberly. "Material of Masculinity: the 1832 and 1834 Portraits of Mató-Tópe, Mandan Chief". In: Innes, Robert Alexander and Kim Anderson (editors). Indigenous Men and Masculinities: Legacies, Identities, Regeneration. Winnipeg, Manitoba, Canada: University of Manitoba Press. 2015. | 99-114 | 2015 | Includes bibliographical references. | |
| Petersen, Karen Daniels with introduction by John C. Ewers. Howling Wolf: a Cheyenne Warrior's Graphic Interpretation of His People. Palo Alto, California: American West Publishing Company. 1968. | 8 | 1968 | Includes bibliographical references. | |
| Snodgrass, Jeanne O. (compiler). ~American Indian Painters: a Biographical Directory. New York, New York: Museum of the American Indian, Heye Foundation. 1968. | 58 | 1968 | Issued as vol. 21, part 1 in the series, Contributions from the Museum of the American Indian, Heye Foundation | |
| Wikipedia contributors. "Mato-tope". In: Wikipedia, the Free Encyclopedia (host URL: https://en.wikipedia.org/wiki/) at source URL: https://en.wikipedia.org/wiki/Mato-tope. 2006. | | 2006 | Current entry for Mato-tope (also known as Four Bears) in Wikipedia (viewed October 26, 2020); webpage created March 12, 2006, revised and updated irregularly. | View |