Grand Coulee Dam Powerhouse
Earl Roberge
Bonneville Dam
William H. Mullins
Power Lines At The Hoover Dam
Mark Newman
Grand Coulee Dam
Earl Roberge
Bonneville Dam
Science Source
Ice Harbor Dam, Washington
Earl Roberge
Waterwheel
Robert Ashworth
Chief Joseph Dam
Earl Roberge
Glade Creek Grist Mill
Jeffrey Lepore
John Cable Mill, Cades Cove, Tennessee
Bruce Roberts
Cherokee Lake #2
Kenneth Murray
Sugar Refinery, 16th Century
Science Source
Hoover Dam
William H. Mullins
Glen Canyon Dam
Richard and Ellen Thane
Horseshoe Falls #1
Ted Kinsman
Wells Dam, Washington
Earl Roberge
Glade Creek Grist Mill #1
Jeffrey Lepore
Horseshoe Falls
Ted Kinsman
Hoover Dam #2
William H. Mullins
Anderson Ranch Dam, Idaho
William H. Mullins
Dells Mill
Richard and Ellen Thane
Swan Falls Dam
Betty B. Derig
Grand Coulee Dam #2
Earl Roberge
Chief Joseph Dam #1
Earl Roberge
Dworshak Dam
Theodore Clutter
Cherokee Lake #1
Kenneth Murray
The John Cable Mill
James Steinberg
Cherokee Lake
Kenneth Murray
Glen Canyon Dam
Mark Newman
Hoover Dam #1
William H. Mullins