Golden Gate, 75th Aniversary | San Francisco


Glen Canyon dam | Arizona



Glen Canyon dam No.2 | Arizona



New Croton Dam | New York



Old Croton Aqueduct, Weir | New York



Bay Bridge Construction | San Francisco



Hoover Dam | Nevada / Arizona



Goat Canyon Trestle | California



Bay Bridge | San Francisco



Brooklyn Queens Expressway | Brooklyn



Cooling Tower | Nuclear Power Plant



40' Triple expansion steam engine (water pump)