Early examples of Pan Am posters from the 1930s & 40s. Note the Havana poster (top left) shows the first version of the Pan Am logo. Note also the Bermuda poster (top center) is in association with Imperial Airways of England. The English would only allow Pan Am access to their markets if Imperial had identical route authority. When service first began from New York to Bermuda Pan Am & Imperial airways each offered one round trip flight per week.