Calaveras Telephone

Historical marker location:

513 Main Street, Copperopolis, California

( Marker is on Main Street, on the right when traveling north.)

Marker installed: 1999

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.