Copy letter from Robert William Frederick Harrison, to The Secretary, British South Africa Company, 2 London Wall Buildings, E.C. The reports from North Eastern Rhodesia [Zambia] relating to the spread of Sleeping Sickness, which they were good enough to send, have been set up in type for the information of the Royal Society Committee on Tropical Diseases. The members of the Committee are of the opinion that the study of the reports would be very much facilitated if they could be accompanied by a rough map giving the names of the places mentioned. 21 December 1906