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

情报历史上的8月21日，这些情报被递交给时任美国总统

Intelligence History on 1961 August 21
Intelligence History on 1962 August 21
Intelligence History on 1963 August 21
Intelligence History on 1964 August 21
Intelligence History on 1965 August 21
Intelligence History on 1967 August 21
Intelligence History on 1968 August 21
Intelligence History on 1969 August 21
Intelligence History on 1970 August 21
Intelligence History on 1971 August 21
Intelligence History on 1972 August 21
Intelligence History on 1973 August 21
Intelligence History on 1974 August 21
Intelligence History on 1975 August 21
Intelligence History on 1976 August 21