There are eight properties listed on the National Register of Historic Places (NRHP) in Linn County, Kansas. Two of the sites are the location of historic events. The Marais des Cygnes Massacre Site is the location of the Marais des Cygnes massacre, an 1858 event during Bleeding Kansas in which pro-slavery advocates kidnapped 11 anti-slavery settlers, killing five of them. John Brown temporarily used the site as a fort, and the property was listed on the NRHP in 1971. The Battle of Mine Creek Site preserves the location of the Battle of Mine Creek, which was fought in 1864 as part of Price's Raid during the American Civil War. Confederate general Sterling Price's army was retreating after being defeated at the Battle of Westport and was attacked by pursuing Union troops. Price's Confederat