"The Harker Pottery Company, oldest firm manufacturing earthenware in America, uses natural gas for firing. "; "Findley, Ira D."; "Harker Pottery Company (Chester, W. Va.)"; "Pottery, American--West Virginia--Chester."; "Findley, Ira D."; "1952"; "Journal article tearout from: [Columbia Gas System. News & Views, 17:1952:June)]."; ""; "P2714"; "pec"; "Harker Pottery Company (Chester, W. Va.)", "Pottery, American--West Virginia--Chester."; "14256"; .