John Hayward, Gazetteer of the United States of America… (Philadelphia: James L. Gihon, 1854), 327.
Fort Des Moines, Io., c. h. Polk co. At the junction of Racoon and Des Moines. It is a beautiful place at the head of navigation of the Des Moines River, within 30 miles of the geographical centre of the state, of which it will probably be the capital at no distant day. The valley of the Des Moines is unsurpassed in fertility, and Fort Des Moines is already the seat of a large inland trade. 120 miles W. from Iowa City.