Cairns-Humphrey Store

Historical marker location:

1100 Grand Avenue, Grand Lake, Colorado

( Marker is on Grand Avenue east of Pitkin Street, on the right when traveling east.)

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.