Milo Milton Quaife, Chicago and the Old Northwest, 1673-1835 (1913)
“ Ordinarily the frontier was the extreme line of white occupation and was backed by settlements whose population became denser in proportion to their distance from it. Michigan, however, presented the phenomenon of a double frontier, open on one side to the British and on the other to the savages; furthermore the settlements were so scattered as to render effectual co-operation between them in case of attack out of the question. [527] Memorial of the inhabitants of Michigan Territory to the President and Congress, December 8 and 10, 1811, in American State Papers, Indian Affairs, I, 780-82 ”
