Fort Arbuckle Site - Credit: Wikimedia Commons
Fort Arbuckle was constructed by the US Army in 1850 to counter raids by Plains Indian tribes on immigrant trains heading west to California and on the settlements of Choctaw and Chickasaw nations in Indian Territory.L. David Norris. "Fort Arbuckle", Encyclopedia of Oklahoma History and Culture. Retrieved June 6, 2013. Read more on Wikipedia
Source: en.wikipedia.org