Excerpt from The Michigan Fur TradeI wish, to thank all private citizens, officers of historical societies, and librarians who have kindly assisted me in obtaining material sought. I am especially indebted to Mr. Clarence M. Burton of Detroit, who generously permitted me to use his large and valuable collection of manuscripts and books on the history of the Northwest. To Professor C. H. Van Tyne of the. University of Michigan, at whose suggest...
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