Hertwig & Co. Archives ; 1890-1937 - Theriault, Florence (Annapolis, Maryland : Gold Horse Publishing, 2000)
Keywords: Hertwig <Firma>; Firmengeschichte; Figuren, Porzellan-; Porzellan; Kunsthandwerk; Auktionskatalog; Kewpies; Porzellanindustrie; Puppen, Porzellan-; Porzellanfiguren s. Figuren, Porzellan-