Holders of an Oxford SSO can access the updated Halsbury's Laws of Canada - Aboriginal (Buist) volume. This will give a 'busy practitioner's' overview' eg leading legislation, case law etc. For more greater depth of commentary/analysis please see other tab in this box
The Canadian Constitution defines "aboriginal peoples of Canada" as including the Indian, Inuit and Métis peoples of Canada.
These are three distinct peoples with unique histories, languages, cultural practices and spiritual beliefs.
You will also encounter 'indigenous peoples' being used as collective name for these groups. 'First Nations' seems to be preferred to Indian.
Title Indigenous legal traditions by 
Protection of First Nations Cultural Heritage: Laws, Policy and Reform by Holders of an Oxford SSO have online access to texts of colonial age treaties via database below:
Sources and materials available to all with access to the internet
In 2017, Indigenous and Northern Affairs Canada (INAC) was dissolved and replaced by 2 new departments: Crown-Indigenous Relations and Northern Affairs Canada (CIRNAC) and Indigenous Services Canada (ISC).
Aboriginal Justice and the Charter realizing a culturally sensitive interpretation of legal rights by 
Let Right Be Done : Aboriginal title, the Calder case, and the future of Indigenous rights by Holders of an Oxford SSO can access the updated Halsbury's Laws of Canada - Aboriginal (Buist) volume among other sources.
Subject searches to use in SOLO include:
Indigenous peoples -- Legal status, laws, etc. -- Canada
Indigenous peoples -- Canada
Indians of North America - Legal status, laws, etc - Canada
Indians of North America - Canada - Treaties
Aboriginal Justice and the Charter realizing a culturally sensitive interpretation of legal rights by Protection of First Nations Cultural Heritage: Laws, Policy and Reform by