This Day in California History (July 21) Cal Wire Archives By Cal Wire Archives Share: Follow CALWIRE: 1907 — The passenger steamer SS Columbia sinks after colliding with the steam schooner San Pedro off Shelter Cove, California, killing 88 people.1952 — The 7.3 Mw Kern County earthquake strikes Southern California with a maximum Mercalli intensity of XI (Extreme), killing 12 and injuring hundreds.1979 — Jay Silverheels, a Mohawk actor, becomes the first Native American to have a star commemorated in the Hollywood Walk of Fame.
