Collection 1. Charles "Chuck" Hughes Papers Online Repository Indiana University » Indiana University Northwest, Calumet Regional Archives
Collection 2. Charles "Chuck" Hughes Papers Repository Indiana University » Indiana University Northwest, Calumet Regional Archives
Collection 3. Communism in the United States, 1968 Repository Indiana University » Center for Documentary Research and Practice
Collection 4. Early 20th Century Pennsylvania Coal Mining, 1981 Repository Indiana University » Center for Documentary Research and Practice