Old Julesburg

Historical marker location:

Julesburg, Colorado

( Marker is on County Route 28, 6 miles west of U.S. 385, on the right when traveling west.)

Marker installed: 1931

In 1913, the city of Trinidad, Colorado, became the site of the first successful oil well-drilled west of the Mississippi River. The discovery led to a boom in oil production in the region, and Colorado became a major oil-producing state.