. Bulletin. INDEX SHEET to the following maps of Illinois River and bottomland lakes, Chlllicothe to Grafton. (After U. S, Engineers Survey, 1902-1905, House Doc. 263, 59tli Congr., 1st Session, 1905.). ^ ^S;>^<;i e^j-j^ ? For non-tecnnicax ry. aee

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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory