The call number range E 50 - E 175 (books, reference and journals) applies to the Aboriginal Peoples of North America. Since the "E" section is mainly for History, you'll see that books will show up in other areas as well, such as Sociology, Education, etc.
The GN 380 call number area (part of the social and cultural anthropology area) contains texts about indigenous peoples.
The Indigenous Studies Portal at the University of Saskatchewan *is an excellent index* that allows you to limit your search to scholarly articles. You can then search for the journal title at StFX to locate the article.
National Film Board: The library's subscription offers more NFB films that the publicly available site, but both offer a rich collection of both short films, documentaries and feature films exploring Canada's Indigenous cultures.
Library and Archives Canada's Aboriginal Resources page
Project Naming: A Government of Nunavut project which allows Indigenous peoples to engage in the identification of Library and Archives photographs.