The History of Laclede, Camden, Dallas, Webster, Wright, Texas, Pulaski, Phelps and Dent Counties, Missouri, published by The Goodspeed Publishing Co. in 1889 is a good resource for researchers. Below are some of the sections on Webster County.
PioneersEstablishment of the CountyLand BuyersMarriages 1855-56MarshfieldVillages Old and New