I have promised the concert score of the Lohengrin pieces to Apt, director of the Caecilienverein, Prague; therefore kindly leave word at Carlsruhe that this score is to be sent immediately after the last concert to Apt in Prague; the parts are to go back here.
Yesterday you had the general rehearsal; I am always with you. The day after tomorrow! I say, “The day after tomorrow!”
Richard Wagner
Source: Project Gutenberg eBook #3835, Correspondence of Wagner and Liszt — Volume 1, No. 134