Key System and March of Progress

Unfinished History

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A Key System train on the Bay Bridge, depicted in the opening celebratory newspaper.


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The March of Progress: Tour of the modern interurban trolley system of San Francisco's East Bay and over the San Francisco-Oakland Bay Bridge. Predicts the bright postwar future of streetcar transit, with visionary images of advanced-design railcars. The Key System transbay service was abandoned in 1961.

Video: Prelinger Archive

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An advertisement from the Pacific Telephone & Telegraph Company welcoming the new, modern Bay Bridge.


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