The Plainfield Halfway House is a historic building in Plainfield, Illinois. Plainfield was first settled in the 1820s by a group seeking to convert the local Pottawatomie to Christianity. Squire L. F. Arnold, the first postmaster of Plainfield, owned the tract of land on which the building stands. In 1834, he built a small building to serve as a post office and a stop for stagecoaches. The property was sold in 1836, and a two-story building was constructed adjacent to the original structure. This new structure operated as a tavern and inn. The inn earned its name by being halfway on the stagecoach line between Chicago and Ottawa. A year later, Dr. Erastus Wight became manager of the establishment, running it until his death in 1845. His son, Dr. Roderick Wight, took over from his father a