The 1891 grave site is the only surviving property associated with "Judge" John Petal Harlow, an early settler of the Grand Valley area. 

Constructed between 1913 and 1916, the dam is a concrete structure 14 feet in height, spanning a distance of 546 feet across the Colorado River.  It was built in order to divert river flow into the Government Highline Canal.

The building is an intact example of a Works Progress Administration-constructed community hall built in 1938 for use by local participants in the Depression-era resettlement program.

The three-story Italian Renaissance Revival style building was constructed as a post office in 1918.  James A. Wetmore served as the supervisory architect.  The walls are of Indiana limestone, and the tall first floor windows are set in rounded arches.

Stranges Grocery in Grand Junction is significant in the areas of Commerce and Ethnic Heritage.  The store is representative of the strong commercial center that helped establish Little Italy and kept it viable.  Out of the four grocery stores that were located within the boundaries of Little Italy, Stranges is the only building that retains integrity.  The Grand Valley experienced an influx of Italian immigrants around the turn of the twentieth century.  Due to social pressure and discrimination as well as a desire for familiar cultural traditions the immigrants created

Constructed between 1912 and 1921, Serpents Trail provided the only automobile access to Colorado National Monument until 1937 when the Fruita Canyon portion of Rim Rock Drive opened.  Serpents Trail reflects engineering techniques used in the construction of early automobile roads in difficult terrain and was specifically designed to optimize the scenery of the park.

Significant for its association with the Civilian Conservation Corps and Works Progress Administration, the district includes four good examples of National Park Service Rustic style architecture.  The structures were constructed of locally quarried sandstone by the CCC with Emergency Conservation Works funding. 

Built by the Civilian Conservation Corps in 1937, to accommodate the recreational needs of visitors to Colorado National Monument, the station is significant for its association with CCC and WPA relief programs during the Great Depression. 

Built by the Civilian Conservation Corps in 1935 and 1936, as the first permanent buildings in Colorado National Monument, the caretaker’s house and garage are significant for their association with public relief projects of the Great Depression.

Constructed between 1931 and 1950, the district is significant for its role in the development of automobile access and tourism in Colorado National Monument and its contribution to the local economy during the Great Depression.  The district’s contributing features are representative of National Park Service Rustic style architecture in their use of native building materials.