OVERALL VIEW OF DAM AND LOCKS, LOOKING NORTHWEST, UPSTREAM - Upper Mississippi River 9-Foot Channel, Lock and Dam No. 6, Trempealeau, Trempealeau County, WI; Army Corps of Engineers; Spencer White Prentis Incorporated; Peppard and Fulton; Robers, Fred J; LaCrosse Dredging Company; American Bridge Company; Sterling Electric Company; Beckman Printing Company; Drake Marble Company; Miller and Kleist; Toye, E W; W S Knott Company; Esser, T C; George C Bolz Dredging Company; Fugins, Miller, and Dresser; W W Magee Company; Pittsburg Plate Glass Company; H S Kaliher Company

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