December 6 in history, these intelligence were sent to the US president

情报历史上的12月6日，这些情报被递交给时任美国总统

Intelligence History on 1961 December 6
Intelligence History on 1962 December 6
Intelligence History on 1963 December 6
Intelligence History on 1965 December 6
Intelligence History on 1966 December 6
Intelligence History on 1967 December 6
Intelligence History on 1968 December 6
Intelligence History on 1969 December 6
Intelligence History on 1971 December 6
Intelligence History on 1972 December 6
Intelligence History on 1973 December 6
Intelligence History on 1976 December 6