"The Friends of Gettysburg (part of the Gettysburg Foundation) is a national leader in battlefield landscape preservation, land protection, monument restoration, and education. The Friends was started in 1989 by a small group of concerned citizens who wanted to help preserve the national parks at Gettysburg. Today, Friends has grown to include close to 25,000 members and supporters all over the world, all committed to the Gettysburg Foundation's mission: working in partnership with the National Park Service, to enhance preservation and understanding of the heritage and lasting significance of Gettysburg."

Black Hawk State Historic Site commemorates Native Americans of the area, particularly the Sauk and Mesquakie (Fox) Indians, who lived here from about 1750 to 1831. The Watch Tower Lodge, built between 1934 and 1942 by the Civilian Conservation Corps and the State of Illinois, houses Works Progress Administration murals and basement "nature rooms" are available for science activities with school groups. Exhibits in the John Hauberg Museum of Native American Life depict the daily life of the Sauk and Mesquakie Indian nations. Dioramas show the four seasons with a full-sized winter house, a replica of a summer long house, an authentic dugout canoe, and other objects relating to the Sauk and Mesquakie. Another exhibit describes the importance of the fur trade to the Native Americans. Also located in the Lodge is an exhibit outlining the 1934–1942 activities of the Civilian Conservation Corps in developing Black Hawk Park. Outside the lodge is a large statue of Black Hawk executed in 1892 by sculptor David Richards. The Lodge was listed on the National Register of Historic Places in 1985.

The site offers exhibits, tours, and occasional recreational and educational events.

Built as a country estate in 1770, Quincy House was originally surrounded by fields and pasture overlooking Quincy Bay. Its architectural details, including a Chinese fretwork balustrade and classical portico, befit the status of the man who built it, the Revolutionary leader Colonel Josiah Quincy. For generations, the Quincys, like the Adamses, to whom they were related, played important roles in the social and political life of Massachusetts. The family produced three mayors of Boston and a president of Harvard. Much of the historical information pertaining to the house and family was documented in the early 1880s by Eliza Susan Quincy. She kept journals, inventoried the contents of the house, commissioned photographs of the interior, and persuaded relatives to return heirlooms so that the house could become a repository of Quincy family history.

The house offers tours and educational programs.

The Italianate structure known as the U. S. Grant Home was built in 1859–60 as a residence by Alexander J. Jackson of Galena. When Ulysses S. Grant returned to the city in 1865 as a Civil War hero, he was presented the house as part of the city's celebration. All of the rooms are decorated and furnished to represent the mid-1860s. Many of the furnishings belonged to the Grant family.

The site offers exhibits, tours, and occasional recreational and educational events.

On October 25, 1864, approximately 2,800 Union troops attacked and defeated about 8,000 Confederates along the banks of Mine Creek. This was one of the largest cavalry battles in the Civil War and was the only major battle fought in Kansas. The Union brigades were commanded by Colonels Frederick W. Benteen and John F. Philips. After this battle, Federal forces pursued and defeated additional Confederates in Missouri as they attempted to return to Arkansas, Indian Territory (Oklahoma), and eventually Texas. Visitors to the site can learn more about the soldiers and their stories as this dramatic story comes alive at the Mine Creek Battlefield.

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

Once home to prehistoric Native Americans, Pond Spring is the post-Civil War home of General Joseph Wheeler, a Confederate major general, a U.S. congressman, and a Spanish-American War general. Following the Civil War, Wheeler became a national symbol for reunification and reconciliation. Wheeler's daughter, "Miss Annie Wheeler," served in three wars as a Red Cross nurse. The 50-acre site includes a dogtrot log house built around 1818, a circa-1830 Federal-style house, the 1880s Wheeler house, eight farm-related outbuildings, two family cemeteries, an African-American cemetery, a small Indian mound, a pond, a boxwood garden, and other garden areas.

The site offers tours by appointment.

The Civil War Preservation Trust is America's largest non-profit organization (501-C3) devoted to the preservation of our nation's endangered Civil War battlefields. The Trust also promotes educational programs and heritage tourism initiatives to inform the public of the war’s history and the fundamental conflicts that sparked it.

The Apple River Fort was the site of an important battle during the Black Hawk War. It was the only fort attacked by Black Hawk during the turbulent summer of 1832. On June 24, 1832, the settlers at the fort turned back an attack by some 200 Sauk and Fox warriors led by Black Hawk. The war, which lasted only 16 weeks, ended the threat of Indian attacks in the area and opened the region to further settlement. Many notable men participated in the Black Hawk War including a young Abraham Lincoln, Jefferson Davis, and General Winfield Scott. Abraham Lincoln and his militia company arrived at the fort the day after the battle. Today, the fort has been reconstructed and is open for self-guided tours. Special events throughout the year highlight many aspects of life in Jo Daviess County in 1832. Exhibits at the Interpretive Center, on the trail, and at the fort tell the story of the Sauk and Fox, the early settlers, and the conflict that became known as the Black Hawk War.

The site offers exhibits and occasional recreational and educational events.

Once the home of a notable Kentucky military family, today the 1859 Butler House preserves the history of the family and the region.

The historic house offers tours year-round, as well as educational programs for school groups. The website offers a brief history of the Butlers, field trip information, two small photo albums of the present-day park, an events calendar, and visitor information.

One of the first of thousands of patriots who would die in the war for American independence, Hale is Connecticut's official State Hero. He was born and spent most of the short life he courageously sacrificed on this 400-acre farm. Hale, a Yale-educated schoolteacher, was commissioned a first lieutenant in the Continental Army in 1775. A year later he volunteered to go behind British lines on Long Island to gather military intelligence desperately needed by General George Washington. The British captured Hale and, when they discovered he was a spy, executed him. He was 21. In 1776, Hale's father rebuilt the Homestead, which has changed little since. Its furnishings include collections amassed by pioneer Connecticut antiquarian George Dudley Seymour and several Hale family possessions.

The homestead offers exhibits and tours.