January 19 – The first west-east transatlantic radio broadcast is made from the United States to England (the first east-west broadcast having been made in December 1901).
October – Frank Nelson Cole proves that 267-1 is composite by factoring it as 193,707,721 * 761,838,257,287 after trying for every Sunday over three years.
The first box of Crayola crayons is made and sold for 5 cents. It contains 8 colors; brown, red, orange, yellow, green, blue, violet and black.
Coca-Cola removes cocaine as a key ingredient from their formula; up to this time, it has contained approximately nine milligrams of cocaine per glass.
^"Mother Jones leading a protest, circa 1903". Explore PA History. Retrieved 2015-11-30.
^Jones, Mother (1925). "Chapter Ten: The March of the Mill Children". In Parton, Mary Field (ed.). The Autobiography of Mother Jones. Chicago: Charles H. Kerr & Co. Retrieved 2015-11-30.
^Bogart, Charles H. (2009). "Bean, Roy "Judge"". In Tenkotte, Paul A.; Claypool, James C. (eds.). The Encyclopedia of Northern Kentucky. University Press of Kentucky. pp. 69–70. ISBN 978-0-8131-5996-6.
Further readingedit
"Domestic Chronology", Statistician and Economist, San Francisco: Louis P. McCarty, 1905, pp. 227–347, hdl:2027/uc1.b3142275 – via HathiTrust. (Covers events May 1898 – June 1905)
External linksedit
Media related to 1903 in the United States at Wikimedia Commons