National China Company

Collector's Encyclopedia of American Dinnerware.  Jo Cunningham.  Paducah, KY: Collector Books, 1982.

East Liverpool Pottery District: Identification of Manufacturers and Marks - 1840-1970.  William C. Gates, Jr., Dana E. Ormerod.  Historical Archaeology:  Journal of the Society for Historical Archaeology.  Volume 16, Nos. 1-2, 1982.

Official History Commemorating the 100th Anniversary,  Salineville, Ohio.  July 27, 28, 29 and 30, 1939.