National Register Listings in Arapahoe County, Colorado
Arapaho Hills
Arapahoe Acres
Brown, David W., House
Comanche Crossing of the Kansas Pacific Railroad
Commandant of Cadets Building, US Air Force Academy
Curtis School
DeLaney Barn
Englewood Post Office
Foster-Buell Estate
Geneva Home
Gully Homestead
Hopkins Farm
Jamaica Primary School
Key Savings and Loan Association Building
Knight-Wood House
Little Estate
Littleton Main Street
Littleton Post Office
Littleton Town Hall
Maitland Estate
Melvin School
Owen Estate
Seventeen Mile House
Smith, William, House
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.