References
- Aaberg, Stephen A. (2010) Medicine Rocks State Park: Results of 2010 Heritage Inventory. Report prepared for the Montana Department of Fish, Wildlife and Parks, Helena, Montana.
- Conner, Stuart W. (1987) Archaeological Site Survey Form, Alcatraz Rock, 24FA294. Site form on file with Montana State Historic Preservation Office, Helena, Montana.
- French, Brett (2005) Rock of Ages. Montana Outdoors 36(4):18–21.
- Grinnell, George Bird (1972) The Cheyenne Indians. (Two Volumes) University of Nebraska Press, Lincoln. Reprint of 1923 original.
- Keyser, James D. (1977) Writing-on-Stone: Rock Art on the Northwestern Plains. Canadian Journal of Archaeology 1:15–80.
- Keyser, James D. (1984) Rock Art of the North Cave Hills. In Rock Art of Western South Dakota, Special Publication of the South Dakota Archaeological Society, No. 9, pp. 1–51, Vermillion.
- Keyser, James D. (2010) Size Really Does Matter: Dating Plains Rock Art Shields. American Indian Rock Art 36:85–102.
- Keyser, James D. (2011) The Bedolina Horsemen: A New Twist in Perspective. American Indian Rock Art 37: 173–181.
- Keyser, James D., and David A. Kaiser (2014) Bear Gulch Shield Heraldry: Iconography of a Protohistoric Period Northwestern Plains Warrior Society. Plains Anthropologist 59:144–181. doi: 10.1179/2052546X14Y.0000000008
- Keyser, James D., and George Poetschat (2014) Northern Plains Shield Bearing Warriors: A Five Century Rock Art Record of Indian Warfare. Oregon Archaeological Society Press, Publication 22, Portland.
- Keyser, James D., and Michael Klassen (2001) Plains Indian Rock Art. University of Washington Press, Seattle.
- Keyser, James D., and Stephanie L. Renfro (2017) A Horse is a Horse—and They Can Tell Us Things. American Indian Rock Art 43:11–28.
- Keyser, James D., David A. Kaiser, George Poetschat, and Michael W. Taylor (2012) Fraternity of War: Plains Indian Rock Art at Bear Gulch and Atherton Canyon, Montana. Oregon Archaeological Society Press, Publication 21, Portland.
- Loendorf, Lawrence L. (2012) Three Rock Art Sites on the Musselshell River, Montana. Sacred Sites Research, Inc, Albuquerque, New Mexico.
- Loendorf, Lawrence L. (2013) The Horned Headgear Site, Montana. American Indian Rock Art 39:71–80.
- Loendorf, Lawrence, Laurie L. White, and Greg White (2012) Rock Art Panel Tracing at Castle Gardens: Site 48FR108, Fremont County, Wyoming. Sacred Sites Research, Inc., Albuquerque, New Mexico.
- Loendorf, Lawrence, Mark Willis, Laurie White, and Jon Harman (2017) A DStretch Analysis at Valley of the Shields (24CB1094), Montana. Sacred Sites Research, Inc., Albuquerque, New Mexico.
- Lowie, Robert H. (1956) The Crow Indians. Holt, Rinehart, and Winston, New York.
- Nagy, Imre (1994) A Typology of Cheyenne Shield Designs. Plains Anthropologist 39:5–36. doi: 10.1080/2052546.1994.11931705
- McCoy, Ronald T. (1984) Circles of Power. Plateau: Magazine of the Museum of Northern Arizona. 55(4):1–32.
- Sundstrom, Linea, and James D. Keyser (1998) Tribal Affiliation of Shield Petroglyphs From the Black Hills and Cave Hills. Plains Anthropologist 43:225–238. doi: 10.1080/2052546.1998.11931868
- Urbaniak, Timothy (2015) United States Department of the Interior, National Register of Historic Places Registration Form (NPS Form 10–900) for Medicine Rocks. On File with Montana Department of Fish, Wildlife and Parks, Helena, Montana.