The DuPage County Historical Museum, formerly the Adams Memorial Library, is a building designed by Charles Sumner Frost in Wheaton, Illinois, United States. The Museum functions as the only institution dedicated to the collection, preservation and interpretation of the material culture documenting the county of DuPage, Illinois. The collections represent artifacts collected by the DuPage County Historical Society since 1929 as well as artifacts collected by the Museum since its founding in 1965.