Dear Honored Herr Wagner!
My poor husband came back so exhausted again from the evening rehearsal that I foresaw his present indisposition which prevents him from coming to see you this morning, since he will have to stay in bed till this afternoon. I join him in sending you and your dear wife my best regards.
Sincerely yours,
Marie Niemann
Source: Letters of Richard Wagner: The Burrell Collection, ed. John N. Burk (Macmillan, 1950), No. 227