In 1851, Francis J. (Frank) Marshall of Weston, Missouri arrived at the bank of the Big Blue River. He came to establish a trading post and to operate a ferry. On November 11, 1854, he opened the first civilian post office in the territory of Kansas. Marshall lent his name to the county and Marysville, the county seat, was named to honor his wife.
Prairie grass along the valleys and gentle slopes of Marshall County were transformed by immigrants into fertile acres of corn, milo, wheat, alfalfa and soybeans. Descendants of the first Hereford cattle brought into the county from England still are bred here, along with large herds of Angus and dairy cattle.
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The Blue Rapids Public Library, second site in Marshall County chosen for the National Register of Historic Buildings, was built in 1875 for a library and has served for that purpose ever since. The library has existed in one location longer than any other library in the state.Blue Rapids, KS National Register
Built in 1859 by Joseph Cottrell, the Pony Express Barn Museum is the oldest building in Marshall County. Too, it is the only original home station along the Pony Express route at its original site. The Pony Express System was inaugurated April 3, 1860Marysville, KS Pony Express
In 1871, Judge J.V. Coon of Elyria, Ohio, visited Blue rapids and took samples of gypsum back to Ohio for testing. It was found to be suitable for the manufacturing of plaster of paris. In 1872, he and a brother returned and set up the first machinery for processing gypsum. In the early 1900Blue Rapids, KS Tours