Fort Washita was established in 1842 as the southwestern-most post in the United States. (Beyond the borders to the south and west was the Republic of Texas which had recently won its independence from Mexico.) The purpose of the post was to protect the Chickasaw and Choctaw Indians from the Plains Indians. For centuries the latter had used this area for hunting and were not happy with newcomers settling in the area. Troops stationed at Fort Washita from time to time in the 1840s included the 2nd Dragoons, the U.S. Regiment of Riflemen, the 6th Infantry, the 7th Infantry, and the 5th Infantry. During a portion of the 1850s the post served as the United States Army Field Artillery School. Throughout the 1840s and 1850s the post provided quarters for the United States Indian Agency to the Chickasaw and Choctaw governments. On April 16, 1861, the fort was abandoned by U.S. forces under the command of Colonel William Emory. The next day Fort Washita was occupied by Confederate forces and used during the War Between the States. For the next hundred years, the buildings were used by members of the Colbert family who were leaders of the Chickasaw Nation. The fort was acquired by the Oklahoma Historical Society in 1962 and has been designated as a National Historic Landmark.

Website does not specify services available at the site.

In the early 1800s, Russians built a settlement at this site along Starrigavan Bay.

The site is open to the public.

Website does not specify any interpretive services available at the site.

Museum not yet completed.

Housed in a 1910 railroad passenger depot, the Museum devotes its over 5,000 square feet of space to rail history. Also offered are historical displays and information about North Carolina's strawberry industry, which originated in Chadbourn.

The museum offers exhibits.

Cannot find a website.

Fort O'Brien (Fort Machias) was built in 1775 and destroyed by the British in the same year. This state historic site is one of few Maine forts active during three wars—the American Revolution, the War of 1812 and the Civil War. Fort O'Brien's layout was altered several times over the 90 years it was active on this site; but the fort's important role in protecting the Machias River and its towns remained unchanged. It was refortified in 1777 and destroyed once again by the British in 1814. Well-preserved earthworks which overlook Machias Bay were erected for a battery of guns in 1863. The first naval engagement of the Revolution was fought offshore in 1775, five days before the Battle at Bunker Hill.

The site is open to the public.

Website does not specify any interpretive services available at the site.

Fort Clark Trading Post State Historic Site is one of the most important archaeological sites in the state because of its well-preserved record of the fur trade and of personal tragedy. More than 150 years ago, it was the scene of devastating smallpox and cholera epidemics that decimated most of the inhabitants of a Mandan and later an Arikara Indian village. The archaeological remains of the large earthlodge village, cemetery, and two fur trade posts (Fort Clark Trading Post and Primeau's Post) are protected at the site, located one and one-quarter mile west of the town of Fort Clark, Mercer County.

The site is open to the public.

Website does not specify any interpretive services available at the site, beyond signage.

Located three miles south of Chaffee, this site marks a crossing over Maple Creek on the Pembina Trail, a transportation route for settlers and freight. There is a marker on the site.

Cannot find a website with any substantive information on the site.

The National Association for Olmsted Parks (NAOP), established in 1980, is a coalition of design and preservation professionals, historic property and park managers, scholars, municipal officials, citizen activists, and representatives of numerous Olmsted organizations around the United States. Its concern is the legacy of landscape work left by Frederick Law Olmsted Sr. and the firm founded by his sons, Olmsted Brothers Landscape Architects (OBLA).

Appears to be an umbrella organization, not affiliated with a specific historic site.

Website has very little specific information about services offered at the site.

Fort O'Brien (Fort Machias) was built in 1775 and destroyed by the British in the same year. This state historic site is one of the few Maine forts active during three wars: the American Revolution, the War of 1812, and the Civil War. Fort O'Brien's layout was altered several times over the 90 years it was active on this site. But the fort's important role in protecting the Machias River and its towns remained unchanged. It was refortified in 1777 and destroyed once again by the British in 1814. Well-preserved earthworks which overlook Machias Bay were erected for a battery of guns in 1863. The first naval engagement of the Revolution was fought offshore in 1775, five days before the Battle at Bunker Hill. In 1923, the United States Government deeded the site of Fort O'Brien to the State of Maine. First administered as a State Historic Site in 1966, it is now maintained by the Bureau of Parks and Lands.

Website offers no specifics on services offered at the site.