California’s first freeway, Arroyo Seco Parkway, officially opened to traffic.
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Johannes Brahms Symphony No. 2 in D Major premiered in Vienna.
Tropical Storm Zeta formed in the open Atlantic Ocean.
The founding of the Soviet Union was announced.
Frank Steunenberg, the former governor of Idaho, was assassinated outside his home.
Astronomer Edwin Hubble formally announced the existence of other galactic systems at a meeting of the American Astronomical Society.
