Report upon work of operating snag boats and dredge boats on Mississippi River above mouth of Missouri River, improvement of Mississippi River between Missouri River and St. Paul, Minn., of harbor at Moline and Rock River Pool, Illinois and Mississippi Canal, operating and care of Galena River improvement, and of Illinois and Mississippi Canal around rapids of Rock River at Milan, Ill., C. S. Riché in charge; app. Z, report of chief of engineers, 1907.

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