In 1804, Lewis and Clark reported the presence of many saltwater springs in the area that now comprises Howard, Cooper, and Saline counties. The largest of these salt springs was the Boone's Lick. The area around this spring was ideal for settlement and for many years "Boone's Lick Country" was a primary destination for pioneers moving west. Nathan and Daniel Morgan Boone, sons of famous frontiersman Daniel Boone, formed a partnership with James and Jesse Morrison in 1805 to produce salt. Brine water was poured into iron kettles and heated to boiling on a stone furnace. As the water evaporated, salt crystallized in the bottom of the kettle. The salt was shipped by keelboat on the Missouri River to St. Louis. Salt, which was indispensable at the time for preserving meat and tanning hides, was produced at the site until approximately 1833. Today, the 52-acre site features picnic facilities and a short trail that winds its way to the spring site, where wood remnants of the salt works and an iron kettle are still visible. Outdoor exhibits interpret this unique saltwater environment and center of frontier industry. Artifacts from the salt manufacturing industry were excavated at the site, and some are on display at the Arrow Rock State Historic Site visitor center in Arrow Rock.

The site offers exhibits and occasional recreational and educational events.

Hot, smoky, noisy—these words describe how Hopewell Furnace looked from 1771 to 1883. Hopewell and other "iron plantations" laid the foundations for America's iron and steel industry. Today, the site stands as an example of America's development during the Industrial Revolution.

The site offers exhibits, tours, and occasional recreational and educational events (including living history events).

The Edison National Historic Site consists of the home and laboratory of Thomas Edison, preserved as they were during the late 1800s.

The home offers tours, artifacts, and exhibits that showcase Edison's life and career.; it also offers videos for loan to educators. The website offers a biography of Edison, a history of the home, original phonograph recordings, visitor information, and a calendar of events.

"Wind, sand, and a dream of flight brought Wilbur and Orville Wright to Kitty Hawk, North Carolina where, after four years of experimentation, they achieved the first successful airplane flights in 1903. With courage and perseverance, these self-taught engineers relied on teamwork and application of the scientific process. What they achieved changed our world forever." The Wright Brothers National Memorial is located in the Kill Devil Hills dunes on the Outer Banks of North Carolina, and features a 60 foot pylon that marks the location of the first flight as well as a visitor center which offers full scale reproductions of the Wright flying machines as well as additional exhibits and educational programs.

The site offers visitor information, historical information, an online bookstore, and information regarding the educational programs offered by the visitor center. In order to contact the park by email, use the "contact us" link located on the left side of the webpage.

"The Battle of Fort Pulaski in April 1862 marked a turning point in military history. It featured the first significant use of rifled cannons in combat." In addition to surprising military strategists worldwide, the battle marked a major Union victory along the coast of Georgia. This was an immensely significant development towards the success of the Union naval blockade - one of the key points of the Civil War. The fort has been restored to its pre-Civil War condition, and offers a variety of interpretive and educational programs in order to show visitors what life was like in the fort during the Civil War prior to its fall.

The site offers detailed historical information regarding the fort, visitor information, an online version of the park newsletter, an events calendar, and an online bookstore. In order to contact the park by email, use the "contact us" link located on the left side of the webpage.

The Inupiat Heritage Center presents the history and culture of the Inupiat people. Originally the only hunters of the bowhead whale, or Agviq, in the region, during the 19th century they came into contact with New England whalers. After this point, many Inupiat crewed on New Bedford vessels and/or traded with the commercial whalers.

The center offers exhibits, a traditional room, activities, tours, storytelling, lectures, dance performances, and Junior Ranger activities. The website offers a booklet of activities to be completed during school visits.

Overlooking the Connecticut River in western Massachusetts, Springfield Armory National Historic Site offers the story of the nation's first armory, established in 1778.

The site offers exhibits, tours, a short film, educational programs, and occasional recreational and educational events (including living history events).

The San Francisco Maritime National Historical Park presents the maritime history of the Pacific Coast. The visitor's center, within a 1908 cannery warehouse, discusses the ethnic diversity of the San Francisco area and displays a First Order Fresnel lighthouse lens. A variety of historic vessels and access to working boat builders are also available on site. Historic vessels include the 1886 square-rigger Balclutha, 1890 steam ferryboat Eureka, 1895 schooner C. A. Thayer, 1891 scow schooner Alma, 1907 steam tug Hercules, 1914 paddlewheel tug Eppleton Hall, and circa 1890 Bay Ark, as well as 6 small craft including a replica Chinese shrimp junk.

The park offers interactive exhibits, information panels, films, ranger-led interpretive programs, tours, sail raising demonstrations, Junior Ranger activities, and a research library. Tours are available on the pier, the Balclutha, the Eureka, and the Hercules. The library is open by appointment only. The website offers videos and a virtual tour, pre- and post-visit activities, curriculum materials, and other activities.

The Boston Harbor Islands Partnership is an umbrella organization representing the public access islands of Boston Harbor. Islands suggested for U.S. history studies include Deer, Thompson, Spectacle, Georges, and Little Brewster Islands. Topics relevant to the islands include Native American and settler relations, the King Phillips War (1674-1676), seacoast and harbor defense, navigational and lighthouse history, and the industrialization of Boston.

The site offers Junior Ranger activities and a GPS-based self-guided tour. The website offers an interdisciplinary guide for teachers; lesson plans, which focus on civic action, maritime history, settlement, and the Native American experience; thematic information on Native American life, geology, the Civil War, the Revolutionary War, ecosystems, and science and technology; and a list of island suggestions according to educational theme. The partnership's other offerings include a video, for rent, on five local Native American tribes; the Harbor Connections educational program; and educator professional development programming.

The Park includes the Peirce Barn and Mill and Old Stone House. Peirce Barn and Mill were built in the 1820s, and operated commercially until 1897. The U.S. Government acquired the mill as part of Rock Creek Park in 1892. The Old Stone House, one of the oldest known structures remaining in the nation's capital, is a simple 18th-century dwelling built and inhabited by common people.

NOTE: The Peirce Mill is currently closed for restoration.

The site offers tours, educational programs, and occasional recreational and educational events; the Old Stone House offers tours; the Peirce Barn offers tours.