The Honey Springs battlefield near Checotah, Oklahoma, has been designated a National Historic Landmark by the Department of the Interior. The Oklahoma Historical Society operates the park, and visitors may take a driving tour and walking tours on its 1,100 acres. The largest battle fought in the Indian Territory, it was unusual because of the presence of white troops, African-American soldiers, and Indian troops. The 150th anniversary of the battle will be on July 17th. You may read more about the park and the battle in the forty-six page nomination of the park for National Historic Landmark status.