A file of correspondence and memoranda concerning relations between Britain and neutral Spain during the Second World War. Subjects discussed in this file include complicated arrangements for the transfer of money to General Juan March, which was used to bribe important Spaniards into supporting continued neutrality rather than joining the Axis; the use of some of the surplus funds to purchase Brazilian tobacco to establish a monopoly in Spanish Morocco; an investigation of March as a blockade-runner by the American Federal Bureau of Investigation (FBI), and British efforts to bring this to an end to preserve the bribery plan; a conversation between a British military attaché and a Spanish general, including the general’s reports of his conversations with Francisco Franco and views on the Spanish army; a report of a conversation with António Salazar in which he reaffirmed his support for Britain; and an investigation of a Panamanian diamond-smuggler who was suspected of working for the Germans.