Classified for credit

Army museum at Fort Sill tracing air-defense artillery from WWI missiles to Patriot systems — military history and applied physics of ballistics and radar.

NPS site of the 1868 Battle of Washita — covers Plains Indian Wars, Cheyenne history, and 19th-century U.S. military policy.

Restored Victorian-era home of early Wichita Falls settler Frank Kell — covers late 19th-century Texas domestic and business history.

County museum documenting Oklahoma pioneer and settler history — covers land-run era homesteading, frontier law, and Lincoln County's 19th-century development.

1920s oil-boom mansion of E.W. Marland illustrating the Gilded Age petroleum industry and Oklahoma Territory settlement history.

Restored frontier jail in the Texas Panhandle documenting law enforcement and settlement history of the Old West.

Regional museum covering the history, culture, and settlement of the southern Great Plains.

Osage County historical society museum covering Native American and settler history of the Osage Nation homeland in northeastern Oklahoma.

Pioneer museum documenting the River Valley region's settlement and frontier history — covers westward expansion and agricultural heritage.

National Historic Landmark 1936 Streamline Moderne diner on Route 66 — supports architectural history, Depression-era commerce, and American road culture.