45,000 Kilovolt-ampere waterwheel
for Tennessee Valley Authority
(foreground), c.1938
Image #21.038 Science Service
Historical Image Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

Westinghouse worker assembles
2,500-kilowatt Generator
1942
Image #10.035 Science Service
Historical Image Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

Hydro-electric Generator
for Russia's Dnieprostroi Dam
1945
Image #21.009 Science Service
Historical Image Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

Cold Weather Testing of an
Oil Circuit Breaker
1936
Image #15.009 Science Service
Historical Image Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

2,500,000-kv-a Impulse Oil
Circuit Breaker, 1934
Image #15.011 Science Service
Historical Image Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

Engineers checking data on 230kv
air-blast circuit breaker
1960
Image #15.021 Science Service
Historical Image Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

Containment Sphere at San Onofre
Nuclear Generating Station
1966
Image 64143
Electricity & Modern Physics
Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

Assembling a Boiling Water Reactor
Humboldt Bay Nuclear Power Station
c.1965
Image 64141
Electricity & Modern Physics
Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution

Wind-driven Electric Generator
1945
Image #21.007 Science Service
Historical Image Collection
National Museum of American History
Smithsonian Institution
copyright, Smithsonian Institution