In which decade of the 20th Century did the Alcatraz Island federal penitentiary close?
Sixties Revolution Turbulent Sixties 1960s (decade) The '60's 60's 1960s in sports 1960's Nineteen sixties The 60s 1960s The '60s Sixties The 60's Nineteen-sixties 1960ies 1960–1969 %6060s '60s 1960-1969 1960’s The Sixties
1960 1969 1960 s 1960–1969 60s sixties sixties revolution 1960s in sports 60 s turbulent sixties 1960s 1960s decade nineteen sixties 1960ies 6060s
1960 s
WikipediaEntity
1960’s