The name "Topeka" is a Kansa-Osage word that means "place where we dug potatoes", or "a good place to dig potatoes". As a placename, Topeka was first recorded in 1826 as the Kansa name for what is now called the Kansas River. Topeka's founders chose the name in 1855 because it "was novel, of Indian origin, and of sound." Mixed-blood Kansa Native American, Joseph James, called Jojim, is credited with suggesting Topeka's name. The city, laid out in 1854, was one of the Free-State towns founded by Eastern antislavery men immediately after the passage of the Kansas–Nebraska Bill. In 1857, Topeka was chartered as a city.