 In 1876, Alexander Graham Bell made the first successful telephone call in Britain from the hotel.In 1890, The International Niagara Commission met in the hotel and their decision on distributing "Niagara power" subsequently led to the adoption of the alternating current worldwide.Other guests have included Napoleon III, Theodore Roosevelt (at the time of his marriage), Rudyard Kipling and Agatha Christie (her book "At Bertram's Hotel" is based on Brown's).