For a time , Spreckels was owner of the '' San Francisco Call '' , then a morning newspaper . While still living in San Francisco , he continued investing in San Diego newspapers , buying '' The San Diego Union '' in 1890 and the '' San Diego Evening Tribune '' in 1901 . He moved his family permanently to San Diego immediately after the 1906 San Francisco earthquake
1906 San Francisco earthquake
1906 San Francisco earthquake
John D. Spreckels