Bragg, to write to the Foreign Secretary Lord Halifax, requesting to good effect that diplomatic pressure be applied in Berlin and Vienna on Freud's behalf. Freud also had support from American diplomats, notably his ex-patient and American ambassador to France, William Bullitt. Bullitt alerted U.S. President Roosevelt to the increased dangers facing the Freuds, resulting in the American consul-general in Vienna, John Cooper Wiley, arranging regular monitoring of Berggasse 19. He also intervened by phone call during the Gestapo interrogation of Anna Freud. The departure from Vienna began in stages throughout April and May 1938. Freud's grandson, Ernst Halberstadt, and Freud's son Martin's wife and children left for Paris in April. Freud's sister-in-law, Minna Bernays, left for London on 5 May, Martin Freud the following week and Freud's daughter Mathilde and her husband, Robert Hollitscher, on 24 May. By the end of the month, arrangements for Freud's own departure for London had become stalled, mired in a legally tortuous and financially extortionate process of negotiation with the Nazi authorities. Under regulations imposed on its Jewish population by the new Nazi regime, a Kommissar was appointed to manage Freud's assets and those of the IPA whose headquarters were near Freud's home. Freud was allocated to Dr Anton Sauerwald, who had studied chemistry at Vienna University under Professor Josef Herzig, an old friend of Freud's. Sauerwald read Freud's books to further learn about him and became sympathetic toward his situation. Though required to disclose details of all Freud's bank accounts to his superiors and to arrange the destruction of the historic library of books housed in the offices of the IPA, Sauerwald did neither. Instead, he removed evidence of Freud's foreign bank accounts to his own safe-keeping and arranged the storage of the IPA library in the Austrian National Library, where it remained until the end of the war. Though Sauerwald's intervention lessened the financial burden of the Reich Flight Tax on Freud's declared assets, other substantial charges were levied concerning the debts of the IPA and the valuable collection of antiquities Freud possessed. Unable to access his own accounts, Freud turned to Princess Marie Bonaparte, the most eminent and wealthy of his French followers, who had travelled to Vienna to offer her support, and it was she who made the necessary funds available. This allowed Sauerwald to sign the necessary exit visas for Freud, his wife Martha, and daughter Anna. They