The first American test-tube baby, Elizabeth Jordan Carr, was born in Norfolk, Virginia.
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LinkedIn was founded by Reid Hoffman and the founding team members from PayPal and Socialnet.com.
President Richard Nixon signed the US Endangered Species Act into law.
Iowa became the 29th state to join the United States of America.
Andrea Bocelli made his classical debut singing at a concert at Teatro Romolo Valli in Reggio Emilia.
Scarlett Johansson made her debut on Broadway.