 The regular correspondence between the Amsterdam and London branches give important insights into trade negotiations of the period and how they were done.The day-to-day running of Hope & Co. in those days was in the hands of Thomas' American nephew Henry Hope (1736–1811), who did business with different countries, including Sweden, Poland, Russia, Portugal, Spain, France and the United States.In 1804 Hope & Co. issued shares to finance the Louisiana Purchase, thanks to the negotiations of Henry Hope and Francis Baring.