| . "Fort Marion Ledger Artists: Epilogue". Cowboys & Indians, vol. 25, no. 6 (August/September 2017). 2017. | 102-103 | 2017 | Features ledger artists Howling Wolf, Making Medicine, Etahdleuh Doanmoe, Zotom, and Bear's Heart. | |
| Fawcett, David M. and Lee A. Callander. ~Native American Painting: Selections from the Museum of the American Indian. New York, New York: Museum of the American Indian. 1982. | | 1982 | Catalog of an exhibition. | |
| Highwater, Jamake. Song from the Earth: American Indian Painting. Boston, Massachusetts: New York Graphic Society. 1976. | 35-37 | 1976 | Includes bibliographical references and index. | |
| Lester, Patrick D. ~The Biographical Directory of Native American Painters. Tulsa, Oklahoma: SIR Publications. 1995. | 644-645 | 1995 | Includes tribal index and bibliographical references. | |
| Matuz, Roger (editor). ~St. James Guide to Native North American Artists. Detroit, Michigan: St. James Press. 1997. | 644-645 | 1997 | | |
| Silberman, Arthur. 100 Years of Native American Painting, March 5-April 16, 1978, the Oklahoma Museum of Art, Oklahoma City. Oklahoma City, Oklahoma: Oklahoma Museum of Art. 1978. | 25 | 1978 | Introduction by Jamake Highwater. | |
| Snodgrass, Jeanne O. (compiler). ~American Indian Painters: a Biographical Directory. New York, New York: Museum of the American Indian, Heye Foundation. 1968. | 227 | 1968 | Issued as vol. 21, part 1 in the series, Contributions from the Museum of the American Indian, Heye Foundation | |
| Zo-Tom and Howling Wolf with introduction by Dorothy Dunn. 1877: Plains Indian Sketch Books of Zo-Tom & Howling Wolf. Flagstaff, Arizona: Northland Press. 1969. | | 1969 | | |