The Erie Canal opens, the Pony Express closes, Wyatt Earp shoots it out in Tombstone, "Baby Fae" gets a baboon heart, and the Patriot Act is signed into law, all on this day.
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National Archives and Records Administration
1972: Following secret peace negotiations with North Vietnam, President Richard Nixon's National Security Advisor Henry Kissinger goes before reporters at the White House and declares that "peace is at hand" in Vietnam. The agreement wouldn't hold up though, as South Vietnam hadn't been party to the negotiations and demanded changes. The U.S. military involvement in the country would come to an end in the summer of 1973 and the war would come to an end with the fall of Saigon to North Vietnamese forces in April 1975.