Elliott Coues,
The Expeditions of Zebulon Montgomery Pike…
“ The Cimarron is a very large river, which drains from the eastern slopes of the great mountains in New Mexico and runs thence through southwestern portions of Kansas, loops into Oklahoma Territory from Meade Co., Kas., loops back into Kansas in Clarke Co., and thence through the S. W. corner of Comanche Co. into Oklahoma again, traverses this Territory, and joins the Arkansaw between the Osage and Creek countries, at a certain point on the line between Oklahoma and the Indian Territory. ”
