Letter, 24/12/1938, H D Skinner to Dr Carl S Enstrom-Caldenius, Saltsjo-Luvnos, Stockholm, Letter of introduction of Dr C E Hercus, representative of New Zealand Government at the Lingiad festival at Stockholm. Credentials of Hercus and Otago medical School. A similar approach is being made to Prof de Geer and Dr Quensil also.