Classified for credit

Heritage excursion railroad with vintage steam and diesel equipment — railroad history, 19th-century transportation technology, and Ohio industrial heritage.

Multi-museum campus on LeFleur's Bluff including Mississippi natural history and state history museums — covers Mississippi history, Civil War, and natural science.

Restored home of prominent Underground Railroad conductors Levi and Catharine Coffin — primary-source study of abolitionism, the UGRR network, and antebellum civic courage.

NPS site at the Lewis and Clark Expedition's 1805–06 winter camp — covers exploration history, indigenous relations, Pacific Northwest geography, and natural history.

Site of the opening shots of the American Revolution — primary-source Revolutionary War history and early American civics.

Lexington history museums at Depot Square — covers the American Revolution, Battle of Lexington, and Massachusetts colonial history.

Aviation museum on Lake Erie featuring WWII-era aircraft and a PT boat — covers military aviation history, aeronautical engineering, and WWII naval operations.

Operational WWII Liberty Ship open for tours — covers wartime maritime history, cargo ship engineering, and the homefront economy.

State park on Hudson River waterfront offering direct views of the Statue of Liberty and Ellis Island — immigration history and civic geography.

NPS-managed Lincoln family home and neighborhood restored to 1860s appearance — covers Abraham Lincoln's pre-presidential life and Illinois history.

NPS visitor center for Lincoln's Springfield home neighborhood — covers Lincoln's pre-presidential life, antebellum Illinois, and the Civil War era.

Working farm recreation of Thomas Lincoln's homestead — living-history interpretation of 1840s prairie life and Lincoln's formative years.

Illinois state historic site housing Abraham Lincoln's tomb — primary-source presidential history, Civil War era, and Illinois heritage.

State historic site marking the burial place of Abraham Lincoln — covers Lincoln's presidency, Civil War history, and American memorialization traditions.

Reconstructed 1830s Illinois village where Lincoln lived — living-history interpretation covers frontier settlement, Lincoln's early biography, and antebellum society.

Reconstructed 1830s frontier village where Lincoln lived as a young man — early American settlement, frontier economy, and Lincoln's formative years.

NPS battlefield site of the 1876 Battle of Little Bighorn — covers Plains Indian history, U.S. military history, and Westward Expansion.

National monument battlefield with visitor center covering the 1876 Battle of Little Bighorn, Plains Indian history, and U.S. Army campaigns.

NPS site at the school central to the 1957 desegregation crisis — covers Civil Rights history, constitutional law, and federal vs. state authority.

Critical Gettysburg battlefield position with interpretive signage — covers July 2, 1863 fighting, Union defensive tactics, and Civil War military geography.

FDR's personal retreat and the site of his death in 1945 — covers the New Deal era, presidential history, and the impact of polio on public life.

Living-history museum with two working farm sites spanning 1860–1890 Colorado settlement — covers pioneer agriculture, community life, and local regional history.

Living-history farm complex covering 11,000 years of Iowa farming — hands-on agricultural history from Native American methods through 20th-century mechanization.

Living-history village with period demonstrations — covers pioneer and settlement-era daily life through hands-on experiential learning.