Collection Overview Collection summary derived from "Guidebook to Manuscripts", 1969: John Charles Casey (1807-1856) was graduated from West Point in 1829 and later became a captain in the United States Army. He was a Special Agent to the Seminoles at the Agency on the Banks of the Caloosa-Halibee, and a good friend of the Seminole Chief, Ho-lah-ta (Billy Bowlegs). The collection consists of letters, both official and personal giving information on the removal of the Indians, the delegations from Arkansas, and...