Author of Canada at a Crossroads: Boundaries, Bridges, and Laissez-Faire Racism in Indigenous-Settler Relations, based on Denis's PhD dissertation research, which included 18 months of fieldwork, 160 interviews, and a photovoice project with Anishinaabe, Métis, and white residents of Northwestern Ontario (Treaty #3 territory). University of Toronto Press (2020).

Winner of the IPUMS Health Surveys Research Award, 2018.