Harmon’s map interior of North America 1820 shows the following “Indians”:

East of the Rocky Mountains:
Beaver Indians — around the Peace River from headwaters to Fort Chipewyan
Cree or Knisteneaux Indians — around the Saskatchewan River drainage
Sursee Indians — around headwaters of the Athabasca River

West of the Rockies:
Sicanny Indians — north of Fraser River
Carrier (Dakelh) or Tacully Indians — around upper Fraser River