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

情报历史上的6月20日，这些情报被递交给时任美国总统

Intelligence History on 1961 June 20
Intelligence History on 1962 June 20
Intelligence History on 1963 June 20
Intelligence History on 1964 June 20
Intelligence History on 1966 June 20
Intelligence History on 1967 June 20
Intelligence History on 1968 June 20
Intelligence History on 1969 June 20
Intelligence History on 1970 June 20
Intelligence History on 1971 June 20
Intelligence History on 1972 June 20
Intelligence History on 1973 June 20
Intelligence History on 1974 June 20
Intelligence History on 1975 June 20