[...] I have taken Edward Devrient in hand, but have adopted the pseudonym of "Wilhelm Drach" for the purpose, because in dealing with this man under my own name I should naturally have been obliged to involve myself more deeply than the affair is worth. Unfortunately, I have had to resort to pamphlet form again, as no great newspaper is open to me. Recently, however, the Norddeutsche Allgemeine has opened its pages to me (through J. Lang). Edward Devrient and His Style will shortly appear therein. I can promise you a great deal of amusement out of it. [...]
Source: Letters of Richard Wagner, Vol. 2, selected and ed. Wilhelm Altmann, trans. M. M. Bozman (J. M. Dent & Sons, 1927), No. 636