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1950 - Baltimore's Memorial Stadium opens - Orioles of International League.

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1951 - US performs atmospheric nuclear test at Enwetak Atoll.

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1955 - The Riviera casino opens on Highway 91 in Nevada.

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1961 - American Harold Graham makes first rocket belt flight.

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1964 - 86 percent of black students boycott Cleveland, Ohio schools.

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1969 - 23rd Tony Awards: Great White Hope and 1776 win.

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1971 - US Supreme Court upholds use of bussing to achieve racial desegregation.

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1972 - Apollo 16 with John Young and Charles Duke lands on Moon with Boeing Lunar Rover #2.

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1975 - 29th Tony Awards: Equus and The Wiz win.

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1980 - The Castro regime announces that all Cubans wishing to emigrate to the U.S. are free to board boats at the port of Mariel west of Havana. 125,000 Cubans flee by the end of the exodus in October, with 27 deaths.

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