Note 21 — Chapter I · THE CHICAGO PORTAGE
Reading edition
Shea, Early Voyages Up and Down the Mississippi, 45 ff.
[22] The distances given in St. Cosme's detailed account total this amount. La Source's general statement is that the party portaged fifteen leagues (ibid., 83), but this, apparently, included the distance between the Chicago River and the Des Plaines.
[23] The party left Chicago October 29, and reached the mouth of the Des Plaines November 11.