Jan. 7 (UPI) -- On this date in history: In 1927, commercial trans-Atlantic telephone service between New York and London was inaugurated . Advertisement In 1931, as the Great Depression was getting underway, a report to U.S. President Herbert Hoover estimated that 4 million to 5 million Americans were out of work. In 1953, U.S. President Harry Truman announced that the United States had developed the hydrogen bomb. File Photo courtesy The Comprehensive Nuclear-Test-Ban Treaty Organization/