October 20 in history, these intelligence were sent to the US president

情报历史上的10月20日，这些情报被递交给时任美国总统

Intelligence History on 1961 October 20
Intelligence History on 1962 October 20
Intelligence History on 1964 October 20
Intelligence History on 1965 October 20
Intelligence History on 1966 October 20
Intelligence History on 1967 October 20
Intelligence History on 1969 October 20
Intelligence History on 1970 October 20
Intelligence History on 1971 October 20
Intelligence History on 1972 October 20
Intelligence History on 1973 October 20
Intelligence History on 1975 October 20
Intelligence History on 1976 October 20