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26. Cannon River, Northfield, Minnesota

27. Construction of the Zumbro Power Dam, Zumbro Township, Minnesota

28. Construction of the Zumbro Power Dam, Zumbro Township, Minnesota

29. Construction of the Zumbro Power Dam, Zumbro Township, Minnesota

30. Construction of the Zumbro Power Dam, Zumbro Township, Minnesota

31. Zumbro River, Zumbro Township, Minnesota

32. High water on the Mississippi River near a building, Minneapolis, Minnesota

33. Gasworks and Minneapolis Western Bridge, Minneapolis, Minnesota

34. Gasworks and lower Mississippi River area, Minneapolis, Minnesota

35. Gasworks and lower Mississippi River area, Minneapolis, Minnesota

36. Gasworks and lower Mississippi River area, Minneapolis, Minnesota

37. Gasworks and lower Mississippi River area, Minneapolis, Minnesota

38. West bank of river with coffer dam and pouring concrete, Rapidan Township, Minnesota

39. Thomson Dam on the St. Louis River, Thomson, Minnesota

40. Mississippi River between Anoka and Champlin, Minnesota

41. Hennepin Island generator, Minneapolis, Minnesota

42. Hennepin Island generator, Minneapolis, Minnesota

43. Hennepin Island generator, Minneapolis, Minnesota

44. Excavation for the Hennepin Island Power Station, Minneapolis, Minnesota

45. Hennepin Island generator excavation, Minneapolis, Minnesota

46. Hennepin Island generator excavation, Minneapolis, Minnesota

47. Hennepin Island generator excavation, Minneapolis, Minnesota

48. Hennepin Island generator excavation, Minneapolis, Minnesota

49. Headrace of the Hennepin Island generator station, Minneapolis, Minnesota

50. East side pumping station, Minneapolis, Minnesota