Books can be found through the BCIT Library Catalogue.
Before you start your search, keep in mind that over the years various names have been used to refer to Indigenous Peoples in Canada and throughout the world. As a result, any of the following terms could be useful in your search:
"Classification systems organize library collections into subject-related categories, so similar topics will be grouped together on the shelf." (From the Elmer E. Rasmuson Library).
"When Indigenous frames of reference are not built into a system of classification, the accessibility of resources for Indigenous library users is reduced. More broadly, the widespread adoption of dominant classification systems like LCC [Library of Congress] means that local and traditional epistemologies and knowledge systems are being crowded out, and might even be eliminated altogether." (From A Case Study in Indigenous Classification by Cherry & Mukunda).
BC First Nations subject headings - A working document from the Xwi7xwa Library, University of British Columbia.