Event:
Willem Klein mentally extracts 13th root of a 100-digit # in 29 sec
More Notable Events on April 7:
1988 Russia announced it would withdraw its troops from Afghanistan
1978 Guttenberg bible sold for $2,000,000 in New York City
1953 1st west-to-east jet transatlantic nonstop flight
1953 Dag Hammarskjold of Sweden elected 2nd United Nations general-secretary
1902 Texas Oil Company, Texaco, forms