Plains Indian Dog. Image source: Charles M. Russell, “Lewis and Clark Meeting the Mandan Indians,” 1897. Accessed via https://www.wikiart.org/en/charles-m-russell/lewis-and-clark-meeting-the-mandan-indians-1897.
Crockford, S. J., & Pye, C. J. (1997). FORENSIC RECONSTRUCTION OF PREHISTORIC DOGS FROM THE NORTHWEST COAST. Canadian Journal of Archaeology / Journal Canadien d’Archéologie, 21(2), 149–153. http://www.jstor.org/stable/41104430
Morris, D. (2008). Dogs: The Ultimate Dictionary of Over 1,000 Dog Breeds. North Pomfret, VT: Trafalgar Square.