This past weekend, San Francisco celebrated the 75th anniversary of the Golden Gate Bridge. And if Bethlehem Steel were still around, it would have been celebrating too. Once America's second-largest steel producer, the now bankrupt company fabricated the steel used in the construction of the iconic bridge -- all 68,000 tons of it. Somewhere during the 1950s, the Pennsylvania-based firm revisited the making of the Golden Gate Bridge, producing a 26 minute film that incorporated some amazing archival footage. Every phase of construction gets covered, and the film ends with the bridge's big opening day in 1937. It's not to be missed.

via The Atlantic