Invitation to Lecture in Mexico Correspondence between Haldane and Salomn de la Selva, Director of Studies at Centro de Estudios Pedagogicos e Hispanoamericos de Mexico, regarding a proposed series of lectures to be given by Haldane at the Centro de Estudios in July and August 1938. The trip was ultimately called off due to a breakdown in communication. Also includes correspondence between Haldane and the Consul General for Mexico regarding the proposed trip. Dec 1937 - Jul 1938