I think that at the end of this year we'll come to the end of the first volume of our manuscript, for which you will still have nearly 100 pages of manuscript.
Next year we'll be busy with the second volume, which will be followed by a third. You see that it is a sufficiently extensive enterprise.
It would be agreeable to me to straighten out the accounts with the end of the first volume; I'll be at your disposition any time you need me.
Source: Letters of Richard Wagner: The Burrell Collection, ed. John N. Burk (Macmillan, 1950), No. 311