For years, Ellwanger published anti-Semitic books, such as The Protocols of the Elders of Zion, as well as books of Holocaust denial, such as his own Jewish or German Holocaust: Behind the Lie of the Century.
Pendant des années, Ellwanger a publié des livres antisémites, tels que The Protocols of the Elders of Zion, ainsi que des livres niant l'existence de l'Holocauste, comme son propre ouvrage Jewish or German Holocaust: Behind the Lie of the Century.