Since time immemorial, the Teme–Augama Anishnabai have stewarded the lands and waters of Lake Temagami and ten–thousand square kilometers of surrounding territory in the modern–day province of Ontario. In the mid–nineteenth century, the colonial government initiated a series of legislative and policy maneuvers intended to disrupt traditional stewardship practices and remove the TAA from economically viable lands. By erasing the Indigenous presence in the Temagami region, the government symbolically transformed the ancestral homelands of the TAA into untouched wilderness ripe for the taking. Processes of commoditization and debt further eroded the TAA way of life into the early twentieth century. The operations of the Hudson's Bay Company Temagami Post encouraged the development of a material dependency among the TAA and reduced the supply of traditional subsistence resources. Several decades later, the Temagami region underwent re–naturalization through the creation of the Temagami Forest Reserve. White environmentalists, seeking to preserve the “wilderness” quality of the Temagami region, facilitated the dispossession of the TAA and undermined pre–existing Indigenous conservation principles. Collectively, I call these technologies of Indigenous dispossession. Drawing upon my personal experiences in the Temagami region as well as archival visits to the American Philosophical Society in Philadelphia and Library and Archives Canada in Ottawa, this thesis will examine three such technologies, namely erasure, commoditization and debt, and sentimentalism, which collided in the Supreme Court case The Bear Island Foundation, et al. v. Attorney General for the Province of Ontario, with devastating repercussions for TAA land and conservation rights.