October 21 in history, these intelligence were sent to the US president

情报历史上的10月21日，这些情报被递交给时任美国总统

Intelligence History on 1961 October 21
Intelligence History on 1962 October 21
Intelligence History on 1963 October 21
Intelligence History on 1964 October 21
Intelligence History on 1965 October 21
Intelligence History on 1966 October 21
Intelligence History on 1967 October 21
Intelligence History on 1968 October 21
Intelligence History on 1969 October 21
Intelligence History on 1970 October 21
Intelligence History on 1971 October 21
Intelligence History on 1972 October 21
Intelligence History on 1974 October 21
Intelligence History on 1975 October 21
Intelligence History on 1976 October 21