Instagram was launched and gained 25,000 users on its first day.
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The first American Chess Congress started in New York.
Dr. Albert Sabin announced his oral vaccine against polio was ready to test.
The Moulin Rouge cabaret opened its doors in Paris for the first time.
The largest music fraternity in the USA, Phi Mu Alpha Sinfonia, was founded.
Pope John Paul II became the first pope to visit the White House in Washington, D.C.
