Correspondence of Sir Almroth Wright and Leonard Colebrook Series of 23 letters from Almroth Wright to Leonard Colebook, with one copy reply, covering both professional and personal topics. The early letters include references to the vaccination work carried out by the two men as part of their War Service, while the later ones cover disagrements over research and their profession. The letters contain reference to others working in the field including Sir Alexander Flemming. 12 January 1916 - 4 January 1945