Between 1920 and 1970, Jenness authored more than 100 works on Canada's Inuit and First Nations people. Chief among these are his scholarly government report, "Life of the Copper Eskimos" (published 1922), his ever-popular account of two years with the Copper Inuit, "The People of the Twilight" (published 1928), his definitive and durable "The Indians of Canada" (published 1932 and now in its seventh edition), and four scholarly reports on Eskimo Administration in Alaska, Canada, Labrador, and Greenland, plus a fifth report providing an analysis and overview of the four government systems (published between 1962 and 1968). He also published a popular account of the one year (1913 to 1914) he spent among the Inupiat of Northern Alaska, "Dawn in Arctic Alaska" (published 1957 and 1985).