[London,] 29 May 1856? 
28 Dean Street, Soho 

Dear Engels, 

I shall hardly be able to leave here before the end of next week, 
since the business with Trtibner” will not have been decided 
before then and I must, besides, have a word with Zitschke, who is 
unlikely to be back in London until then. At all events I shall let 
you know beforehand when I shall be leaving. 

Salut. 
Your 
K. M.