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

情报历史上的2月21日，这些情报被递交给时任美国总统

Intelligence History on 1962 February 21
Intelligence History on 1963 February 21
Intelligence History on 1964 February 21
Intelligence History on 1966 February 21
Intelligence History on 1967 February 21
Intelligence History on 1968 February 21
Intelligence History on 1969 February 21
Intelligence History on 1970 February 21
Intelligence History on 1972 February 21
Intelligence History on 1973 February 21
Intelligence History on 1974 February 21
Intelligence History on 1975 February 21
Intelligence History on 1976 February 21