The Society operates several historic sites, including the Old Lighthouse Museum and Captain Palmer House. The 1823 Old Lighthouse Museum's six rooms of exhibits testify to the history of this coastal region through exhibits depicting the lives of Stonington's fishermen and farmers, merchants and shipbuilders, pottery makers, blacksmiths, and many other trades. Each year a special aspect of Stonington history is featured. One room with a large dollhouse is reserved for items of interest to children and adults. The 1852 Captain Palmer House displays memorabilia pertaining to Nathaniel's discovery of Antarctica and the Palmer brothers' adventurous lives, as well as other Stonington family portraits, furnishings, and artifacts.

The society offers research library access, lectures, workshops, and educational and recreational events and programs; the museum and house offer exhibits and tours.

The museum is dedicated to the life and times of General Sam Houston, former Governor of Tennessee, victor over Santa Anna in the Texas War of Independence, first President of the Republic of Texas, Senator from the State of Texas, and Governor of the State of Texas. It includes both traditional museum spaces and exhibits and historical structures.

The museum offers exhibits, tours, and educational and recreational events.

Staatsburgh is a New York State Historic Site located within the boundaries of Mills-Norrie State Park. It provides an example of the great estates built by America's financial and industrial leaders during the Gilded Age. A 25-room Greek Revival structure was built on the site in 1832 by Morgan Lewis and his wife, Gertrude Livingston, replacing an earlier house that had burned down. This second house was inherited by Ruth Livingston Mills, wife of noted financier and philanthropist Ogden Mills. In 1895, Mr. and Mrs. Mills commissioned the prestigious New York City architectural firm of McKim, Mead, and White to remodel and enlarge their Staatsburg home. After completion in 1896, the house was transformed into a Beaux-Arts mansion of 65 rooms and 14 bathrooms. Its exterior was embellished with balustrades, pilasters, floral swags, and a massive portico. The rooms were furnished with elaborately carved and gilded furniture; fine oriental rugs; silk fabrics; and a collection of art objects from Europe, ancient Greece, and the Far East.

The site offers tours and educational and recreational programs and events.

The Society was formed in 1972 to perpetuate the mission of preserving the rich history of Jericho, Vermont, and the legacy of Wilson "Snowflake" Bentley. The Society's 1885 headquarters is located in the historic Chittenden Mills, a national historic site. The Old Red Mill, as it is known, houses a milling museum, art gallery, craft shop, and is also the home of the "Snowflake" Bentley Exhibit. Native son, Wilson A. Bentley, pioneered the technique of photomicrography and was the first person to photograph a single snowflake. The entire lower level of the building displays priceless mementos of "Snowflake" Bentley, original milling machinery, and the products of Jericho's water-powered mills.

The mill offers exhibits and tours.

Fort Foster was one of the original Seminole War forts constructed in Florida during the early 1800s. Today a replica wood-picket-style fort has been constructed on the original site. Park rangers provide tours, and explain the Fort operations and living conditions, as well as telling the history of the Seminole Wars in Florida. The interpretive center contains exhibits about the fort, the Seminoles, and the Second Seminole War.

The park offers exhibits, tours, and occasional living history events.

The Society is committed to the preservation and interpretation of Arrowhead, home of author Herman Melville, the first National Historic Landmark to be so designated in Berkshire County. The author's study, piazza, the original fireplace from his short story "I and My Chimney" and the restored barn in which Melville and Hawthorne spent hours discussing their writings are all open to the public. The Society has also restored the North Meadow preserving the view of Mount Greylock which was a major inspiration to Melville.

The society offers research library access and occasional recreational and educational events; the museum offers exhibits and tours.

With three permanent collections and a membership in the Smithsonian Affiliations Program, the Museum offers a wide range of exhibits, including a glimpse into the daily lives of soldiers during the Civil War; a reproduction of a turn-of-the-century locomotive factory; and an exciting depiction of the Civil War's Great Locomotive Chase.

The museum offers exhibits, tours, lectures, workshops, and other educational and recreational programs.

Visitors to Oak Alley Plantation may tour the restored 1830s plantation home and its grounds. Tours of the mansion are conducted by guides dressed in period costumes and are given on the hour, generally lasting 35 to 40 minutes.

The plantation offers tours.

Generals George A. Custer, Nelson Miles and Philip Sheridan, Major Reno, William "Buffalo Bill" Cody and James B. "Wild Bill" Hickok are part of the history of this outpost on a military trail. Established in 1865 in the land of the Cheyenne and Arapaho, Fort Hays protected railroad workers and travelers on the Smoky Hill Trail. Visitors can see the military items and photographs at the visitor center, as well as the original 1867 blockhouse, furnished officers' quarters, the original 1872 guardhouse, and Native American artifacts.

The site offers exhibits, tours, and educational and recreational programs.

During the 1790s, James Vann became a Cherokee Indian leader and wealthy businessman. He established the largest and most prosperous plantation in the Cherokee Nation, covering 1,000 acres of what is now Murray County. In 1804 he completed construction of a 2-and-a-half-story brick home that was the most elegant in the Cherokee Nation. After Vann was murdered in 1809, his son Joseph inherited the mansion and plantation. Joseph was also a Cherokee leader and became even more wealthy than his father. In the 1830s almost the entire Cherokee Nation was forced west by state and federal troops on the infamous Trail of Tears. The Vann family lost their elegant home, rebuilding in the Cherokee Territory of Oklahoma. Today the Vann House survives as Georgia's best-preserved historic Cherokee Indian home. A guided tour allows visitors to see the house which features hand carvings, a "floating" staircase, a 12-foot mantle, and fine antiques.

The site offers tours, exhibits, a film, demonstrations, and recreational and educational events.