Various, Encyclopaedia Britannica, 11th Edition…
“ In certain regions of the continent small tribes have been annihilated in the course of wars with other Indians or with the whites, and others have been decimated by disease, famine, &c.; and over large areas the aboriginal population, according to some authorities, has vastly diminished. Thus Morice estimates that the Athabaskan population at present in Canada (about 20,000) is less than one-seventh of what it was a century or more ago ”
