* 1921 – Leo Penn, American director ( d. 1998 )

* 1921 – Ernest Angley, American evangelist and broadcaster

* 1921 – J. James Exon, American politician ( d. 2005 )

The most important Canadian theorist was an American immigrant, Henry Wise Wood, president of the United Farmers of Alberta ( UFA ) during that movement's time as the governing party of the province ( 1921 – 1935 ).

* 1921 – Jack Kramer, American tennis player ( d. 2009 )

* 1921 – Marilyn Maxwell, American actress ( d. 1972 )

* 1921 – Richard Adler, American songwriter and composer ( d. 2012 )

* 1921 – Hayden Carruth, American poet and critic ( d. 2008 )

* 1999 – Byron Farwell, American historian ( b. 1921 )

* 1921 – William Asher, American director, screenwriter, and producer ( d. 2012 )

* 1921 – Webb Pierce, American singer-songwriter and guitarist ( d. 1991 )

* 1921 – Esther Williams, American actress and swimmer

* 1843 – C. I. Scofield, American theologian, minister, and writer ( d. 1921 )

* 1921 – Gene Roddenberry, American screenwriter and producer ( d. 1991 )

* Ajax Records ( Quebec ) ( 1921 – 1926 ), a North American record company

* 1921 – Kenneth Arrow, American economist, Nobel Prize laureate

* 1921 – Nancy Kulp, American actress ( d. 1991 )

* 1921 – Thomas Schelling, American economist, Nobel laureate

* 1921 – Alex Haley, American historian ( d. 1992 )

* 1921 – Anna Lee Aldred, American jockey, first female to be a licensed jockey ( d. 2006 )

* 1921 – Herb Ellis, American guitarist ( d. 2010 )

* 2002 – John Agar, American actor ( b. 1921 )

In 1920 the Advertiser was merged with The Boston Record, initially the combined newspaper was called the Boston Advertiser however when the combined newspaper became an illustrated tabloid in 1921 it was renamed The Boston American.

*" Piracy Suspected In Disappearance Of 3 American Ships ", The New York Times, June 21, 1921.

* The Cambridge History of English and American Literature, Volume I Ch. 6. 5: De Consolatione Philosophiae, 1907 – 1921.

The discovery of the Long Beach Oil Field in 1921, which proved to be the world's richest in production per-acre of the time, increased the importance of the Los Angeles Basin as a worldwide oil producer.

Two notable oil paintings of this time were New York Interior ( 1921 ) and New York Restaurant ( 1922 ).

Jack Cox, an oil equipment executive from Houston and the 1962 Republican gubernatorial nominee, was born in Stephens County in 1921.

Experimental drilling by Gulf Oil Corporation led to the county's, and the Panhandle's, first oil and gas production in late 1921.

In the late summer of 1921, Winters Syndicate drilled down over 1, 920 feet exploring for oil in the Leola area.

In 1921 the Union-Bell well blew in as a 2, 500-barrel gusher and set off an oil rush by major oil companies and fly-by-night producers.

In 1921, oil was discovered in Homer ; in 1921, another strike followed in Haynesville in northern Claiborne Parish.

The first Panhandle oil well was drilled in the Borger area on May 2, 1921, on the 6666 ( the " Four Sixes ") Ranch of S. B.

The Minerva-Rockdale oil field was discovered in 1921 and provided new opportunities for investment.

The discovery of vast quantities of oil in the region after World War I provided the impetus for the annexation of the former Ottoman Vilayet of Mosul ( of which the Kirkuk region was a part ), to the Iraqi Kingdom, established in 1921.

On March 1, 1921, the Halliburton “ method and means of excluding water from oil wells ” was assigned a patent from the U. S. Patent Office.

Also central to Cárdenas's project were nationalistic economic policies involving Mexico's vast oil production, which had soared following strikes in 1910 in the area known as the " Golden Lane ," near Tampico, and which made Mexico the world's second-largest oil producer by 1921, supplying approximately 20 percent of domestic demand in the United States.

* Osage Indian murders ( 1921 – 1925 ), a group of murders that took place on the Osage Indian Reservation as whites tried to get control of headrights to oil royalties

Charles Demuth, Aucassin and Nicolette, oil on canvas, 1921

Image: Davis_Stuart_Lucky_Strike_1921. jpg | Stuart Davis, Lucky Strike, 1921, oil on canvas, Museum of Modern Art New York City

In 1921 he founded the company Seismos, which was hired to conduct seismic exploration in Texas and Mexico, resulting in the first commercial discovery of oil using the seismic method in 1924.

Anthony Francis Lucas ( born Antun Lučić, September 9, 1855 ; died September 2, 1921 ) was a Croatian-born oil explorer.

The ordinance was cancelled a year later having been deemed ultra vires however during his office Commissioner Cory pursued further administration of the Territories, overseeing the appointment of councillors for the first time and establishing operations to facilitate the expansion of oil and gas interests in the region including the opening of the Territories ' administration offices at Fort Smith in 1921.

The well, which reached a depth of never proved to hold a commercially viable amount of oil and was capped in 1921.

* Escena callejera en Nueva York ( Street scene in New York ), oil painting, 1921.

The arrival of the Esso oil refinery in 1921 transformed a sparsely populated agricultural area into an industrial centre with a population of around 14, 500.