They established the state nickname before the state even existed? I will need a link for that one.
I got you fam:
The Hawkeye State
This popular nickname for the state of Iowa is said to have come from the scout, Hawkeye, in James Fenimore Cooper's The Last of the Mohicans published in 1826. According to the Iowa State web site, "Two Iowa promoters from Burlington are believed to have popularized the name." The nickname was given approval by "territorial officials" in 1838, twelve years after the book was published and eight years before Iowa became a state.
http://www.netstate.com/states/intro/ia_intro.htm