Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society, to the Reverend John Roscoe [leader of the Mackie Ethnological Expedition], Ovington Rectory, Thetford In reply to John Roscoe's letter, informs him that they will write to the War Office, but supposes that it is probably not necessary to get permission to make a lantern slide of the map [of Uganda]. 16 July 1921