London, 3 December 1879 
41 Maitland Park Road, N. W. 
Dear Sir, 
For reasons of health I was compelled to absent myself from 
London for a time. On my return today I found awaiting me your 

letter of 23 November and your work.’ I hasten to acknowledge 
receipt and at the same time express my thanks to you. 

Yours very truly, 

Karl Marx