[...] I learn that you are publishing the pianoforte arrangement of Kittl's opera The French at Nice, and I beg you at any rate to omit my name (as author of the libretto) from the title. I particularly pledged Kittl for his part not to announce my name publicly as author and I am sorry that this has been done already elsewhere. At present the most confused opinions are held about this authorship and I want to encourage them as little as possible.—[...]
Source: Letters of Richard Wagner, Vol. 1, selected and ed. Wilhelm Altmann, trans. M. M. Bozman (J. M. Dent & Sons, 1927), No. 244