page_title: Timeline of Tulsa, Oklahoma
section_title: 1900s-1940s
hierarchical_section_title: Timeline of Tulsa, Oklahoma / 20th century / 1900s-1940s
caption_attribution_description: English: A map of from 1920 originally listed at http://www.lib.utexas.edu/maps/oklahoma.html
context_page_description: The following is a timeline of the history of the city of Tulsa, Oklahoma, United States.
context_section_description: 1901 – Oil discovered at Red Fork, near Tulsa, starting oil boom.
  1902 – Tulsa chartered as a city.
  1903
  Telephone system sold to Indian Territory Telephone Company.
  Original 3-story Brady Hotel constructed.
  1904
  Tulsa annexed North Tulsa.
  First Tulsa bridge built across Arkansas River.
  Pumping plant built to deliver Arkansas River water to consumers via piping system.
  Indian Territory Telephone Company bought by Pioneer Company
  1905
  Tulsa World newspaper begins publication.
  Oil discovered at Glenn Pool near Tulsa.
  First two public schools built.
  1906
  Tulsa Hospital opens (would close after WWI).
  Trolley begins operating.
  Tulsa High School built.
  Oklahoma Natural Gas Company, now named OneOK, founded.
  1907
  Tulsa becomes part of the new U.S. state of Oklahoma, and county seat of newly formed Tulsa County.
  Henry Kendall College moved from Muskogee to Tulsa.
  Population: 7,298.
  1908
  Commission form of government adopted.
  Orcutt Lake and Amusement Park, privately owned and developed, opened, advertised as Tulsa's first playground.
  1909
  West Tulsa becomes part of Tulsa.
  Tulsa buys land that would become Woodward Park.
  1910
  Tulsa County Court House built.
  Population: 18,182.
  Exchange National Bank founded after failure of Farmers' National Bank.
  Texaco builds first oil refinery in West Tulsa.
  Oil & Gas Journal, oil industry trade journal, headquartered in Tulsa.
  Area of city: 3.5 square miles.
  Hotel Brady annex and Tulsa Hotel were built.
  1913
  Booker T. Washington High School established.
  Joshua Cosden builds second oil refinery in West Tulsa.
  1914
  Tulsa Convention Hall built.
  Holy Family Cathedral dedicated.
  Temple Israel congregation founded.
  1915
  Oklahoma Hospital established.
  Chamber of Commerce active.
  1916 – Carnegie library opens, forerunner of the Tulsa Public Library system.
  1917
  Orcutt Lake Amusement Park closed and converted to Swan Lake residential area. Gus Orcutt sold his development to Tulsa developer, E. J. Brennan, who coined the name Swan Lake. Brennan donated the lake itself to the City of Tulsa as a public park.
  Tulsa Central High School construction completed
  1918
  Morningside Hospital opened.
  Cosden Building constructed, considered first "skyscraper" in city.
  1920
  Henry Kendall College becomes University of Tulsa.
  Tulsa Tribune newspaper in publication.
  Population: 72,075.
  1921
  May 31 – June 1: Tulsa race riot devastated Greenwood.
  All Souls Unitarian Church founded.
  1922
  Tulsa Little Theater founded.
  Atlas Life Building constructed.
  1923
  First International Petroleum Exposition.
  Major flood of Arkansas River heavily damages Tulsa water purification plant and causes its relocation to a site near Mohawk Park.
  1924
  Spavinaw Dam built.
  Tulsa Community Fund established.
  St. Johns Hospital opened.
  Southwestern Bell Telephone Company constructs Main Dial System Building.
  1925 – Mayo Hotel built.
  1926
  KVOO radio begins broadcasting.
  Tulsa State Fair grounds in use.
  1927
  Red Fork becomes part of Tulsa.
  Tulsa Civic Symphony active.
  Goodwill Industries of Tulsa incorporated.
  Tulsa Zoo opens.
  Tulsa Club Building constructed as a joint venture between the club and the Tulsa Chamber of Commerce.
  1928
  Carbondale becomes part of Tulsa.
  Tulsa Municipal Airport dedicated.
  Spartan Aircraft Company in business.
  Spartan School of Aeronautics established.
  Philtower Building constructed.
  1929
  Tulsa Oilers ice hockey team played the Duluth Hornets for the grand opening of the Tulsa Coliseum on January 1.
  Boston Avenue Methodist Church and National Bank of Tulsa Building constructed.
  Mohawk Park Waterworks Plant completed.
  Tulsa annexed Carbondale.
  Public Service Company Building completed.
  1930
  Cain's Dance Academy in business.
  Population: 141,258.
  1931
  Union Depot opens.
  Philcade Building constructed.
  First All Souls Unitarian Church completed.
  1932
  Tulsa Fairgrounds Pavilion (arena) built.
  Waite Phillips donated his home to become Philbrook Art Museum.
  1934 – National Conference of Christians and Jews Tulsa chapter founded.
  1935 - Brady Hotel destroyed by fire. (The gutted skeleton remained in place until 1970).
  1938
  KOME radio
caption: Map of Tulsa in 1920
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