The family Wesendonck will be pleased to accept the kind invitation of Herr and Frau Wagner for next Sunday. But Herr and Frau Wagner would give great pleasure to the family Wesendonck by spending the evening tonight quite alone with them.
The Family Wesendonck
Zurich, January 19, 1855
Source: Letters of Richard Wagner: The Burrell Collection, ed. John N. Burk (Macmillan, 1950), No. 144