CITGO takes pride in helping our neighbors where we live and work.CITGO takes pride in helping our neighbors where we live and work.
The 1920s
The Roaring ’20s
1920 The 19th Amendment to the Constitution of the United States granting women the vote is ratified.
1921 Insulin discovered by Frederick Banting at the University of Toronto, a discovery that has saved millions of lives.
1922 Benito Mussolini comes to power in Italy.
1923 Cecil B. DeMille, Hollywood director and producer, films the silent movie, The 10 Commandments.
1924 Communist leader Vladimir Ilich Lenin dies; Josef Stalin comes to power.
1925 Cities Service begins drilling in the rich Seminole Field in Oklahoma using new tools and oil recovery techniques.
1925 The Scopes “Monkey Trial” draws national attention-high school science teacher John T. Scopes goes on trial for teaching Darwin’s Theory of Evolution, thus violating Tennessee’s Butler Act.
1926 Gene Tunney defeats Jack Dempsey to win the world heavyweight boxing title.
1927 American singer and actor Al Jolson stars in The Jazz Singer, the first feature-length film to successfully integrate sound.
1927 All the Cities Service subsidiaries combined had, or were drilling, 176 wells and producing 160,000 barrels per day.
1927 American aviator Charles Lindbergh makes the first nonstop, solo flight across the Atlantic Ocean.
1927 Cities Service consolidates all the gas producing and transportation activities of the Empire Company into the Cities Service Gas Company.
1927 Cities Service introduced “Koolmotor” high octane gasoline along with its companion “Koolmore” motor oil.
1928 Cities Service discovered The Oklahoma City Pool, one of the largest and most productive oil fields of all time.
1928 Alexander Fleming discovers penicillin.
1928 Cities Service merges with Arkansas Natural Gas and its subsidiaries, Ark Fuel and Louisiana Oil Refining.
1928 Walt Disney produces first sound cartoon.
1929 Stock market crash leads to the Great Depression.
1929 Future President of Cities Service W. Alton Jones buys $50 million worth of utilities.
1929 Venezuela became the world’s largest exporter of oil.

CITGO History

Through The Decades
The 1900s
The 1910s
The 1920s
The 1930s
The 1940s
The 1950s
The 1960s
The 1970s
The 1980s
The 1990s
The 2000s


 Text Color Key
Black Text =
Historical Events

Green Text =
Cities Service Historical Events

Red Text =
Venezuelan Historical Events