Twelve Mile House was a road house twelve miles from Sioux City run by Desiree Chausee. It was a log building on this site and was also the location of Willow's Post Office. Its postmasters were William Mathers on 19 August 1861, Desire Chausee in 1864, Charles Heath in 1865, and finally Adelescat, with Joseph Dupins as P. M., on November 19, 1869. In its day it was a well-known stopping point for stages, ox teams, and travelers.