A leak and explosion of methyl chloride refrigerant in a Cleveland hospital kills one hundred and twenty-eight and becomes regarded as the catalyst for the development of chlorofluorocarbon refrigerants.[2]
June 27 – The first public demonstration of color television is held, by H. E. Ives and his colleagues at Bell Telephone Laboratories in New York City. The first images are a bouquet of roses and an American flag. A mechanical system is used to transmit 50-line color television images between New York and Washington, D.C.
July–Septemberedit
August 11 – The first Bud Billiken Parade and Picnic, the oldest and largest US African-American parade, is held in Chicago.
August 31 – The Young Plan, which sets the total World War I reparations owed by Germany at US$26,350,000,000 to be paid over a period of 58½ years, is finalized.
September 3 – The Dow Jones Industrial Average (DJIA) peaks at 381.17, a height it will not reach again until November 1954.
October–Decemberedit
October 11 – J. C. Penney opens Store #1252 in Milford, Delaware, making it a nationwide company with department stores in all 48 states.
October 24–29 – Wall Street Crash of 1929: Three multi-digit percentage drops wipe out more than $30 billion from the New York Stock Exchange (10 times greater than the annual budget of the federal government).
December 3 – Great Depression: U.S. President Herbert Hoover announces to the U.S. Congress that the worst effects of the recent stock market crash are behind the nation, and that the American people have regained faith in the economy.
^"Lynwood Edgerton Clark Collection: Veterans History Project (American Folklife Center, Library of Congress)". Lcweb2.loc.gov. 2011-10-26. Retrieved 2012-03-06.
^Angier, Natalie (7 July 2021). "Richard C. Lewontin, Eminent Geneticist With a Sharp Pen, Dies at 92". The New York Times. Retrieved 8 July 2021.
^Grace Mirabella, editor of American Vogue through the 1970s and 1980s who refocused the magazine on ‘real women’ – obituary
^Frank Thomas, Pirates star and original Met, dies at 93
^Stange, Mary Zeiss; Oyster, Carol K.; Sloan, Jane E. (2011-02-23). Encyclopedia of Women in Today's World. SAGE Publications. p. 1344. ISBN 9781412976855. Retrieved 22 June 2018.
^"Eric Carle, Author and Illustrator of 'The Very Hungry Caterpillar,' Dead at 91". Rolling Stone. 2021-05-27. Retrieved 27 May 2021.
^Toshihiro Katayama; Helmut Langer; Trix Wetter (1994). Who's who in Graphic Design: Profiles of More Than 300 Leading Graphic Designers from 46 Countries, Including 1500 Illustrations. Benteli-Werd Verlags. ISBN 978-3-85932-135-9.
^Eagle, Bob; LeBlanc, Eric S. (2013). Blues: A Regional Experience. Santa Barbara, California: Praeger. p. 327. ISBN 978-0313344237.
^Collins, Louise Mooney; Speace, Geri J. (1995). Newsmakers, The People Behind Today's Headlines, 1995 Cumulation. New York: Gale Research Inc. pp. 8. ISBN 0-8103-5745-3.
^Chase's calendar of events. the ultimate go-to guide for special days, weeks and months. Lanham: Rowman & Littlefield. 2019. p. 444. ISBN 9781641433167.
^Chase's calendar of events 2019 : the ultimate go -to guide for special days, weeks and months. Place of publication not identified: Bernan Press. 2018. p. 450. ISBN 9781641432641.