The library exhibits county artifacts. There is a research facility for local history, genealogy, and local records archives. The grounds include: a restored one-room school; the original 1838 Johnson County courthouse; and a collection of agricultural implements and locally manufactured lawn mowers. One of the few historical societies in Missouri to have pre-Civil War records; be sure to ask about how the records were stolen to keep them safe.
Every Sunday (except holidays) there is an open acoustic jam session in the Culp Building, west of the Mary Miller Smiser Heritage Libraryy, 302 North Main from 2 p.m.-5 p.m. The music is mostly traditional, but each week features an eclectic mix depending on players present. All are welcome to participate or just listen.