The Heritage House

Historical marker location:

4501 Pleasanton Avenue, Pleasanton, California 945, Pleasanton, California

( Marker is on Fairgrounds Road.)

Marker installed: 1993

architecture houses residential buildings

California was the site of the nation's first successful oil well in 1892. The well was drilled in the city of Los Angeles and produced about 25 barrels of oil a day. Today, California remains a major oil-producing state.