Technology 1920-1939

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Technology 1920-1939

1921-Aircraft Sink Battleship

1922-First US Aircraft Carriers Launched

1922-Doolittle Flies Coast-to-Coast in Under a Day

1922-QANTAS Introduces Service

1923-US Crossed Non-Stop

1924-Around-the-World Flight

1925-Air Mail Contracts

1925-Doolittle Wins The Schneider

1926-Ford Trimotor Introduced

1927-Lindbergh Flies Across Atlantic

1927-Commercial Trans-Atlantic Radio/Telephone Service

1927-French Cross South Atlantic

1928-Earhart First Woman to Fly Across Atlantic

1928-Flight from San Francisco to Australia

1930-Cyclotron Invented

1930-Flash Bulb Introduced

1931-Empire State Building Opened

1931-Wiley Post Sets New Round-the-World Record

1932-Doolittle Seizes Speed Record

1933-Hoover Dam Completed

1933-Boeing 247 Completed

1933-TWA Takes Delivery of DC-1

1934-DC-2 Enters Service

1935-Earhart First Woman to Cross Pacific

1935-Howard Hughes Slashes Speed Record

1935-DC-3 Introduced

1935-Pan Am Begins Service to Manila

1937-US Army Gets First B-17

1937-Hindenburg Blows Up

1937-Amelia Earhart Lost

1938-Hughes Sets New Around-the-World Record

1938-DC-4 Flown First Time

1938-Boeing Unveils Its Stratoliner

1939-Passenger Service Across Atlantic Ocean

1939-Germans Test New Plane

1939-Igor Sikorsky Flies a Helicopter

1939-DDT Discovered as Insecticide

1939-Einstein Writes Roosevelt a Letter

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