There is a wonderful audio site that may interest you:
This site has the famous American radio commentator H. V. Kaltenborn summing up what was then known about the Pearl Harbor attack 30 minutes after it was first reported by Franklin Roosevelt.
It also has NBC radio concluding an episode of "Sammy Kaye's Sunday Serenade" at Radio City, New York City, followed immediately by an announcement of the Japanese attack on Pearl Harbor, 2:28 EST, Dec. 7th, 1941.
There is also NBC with a live remote from Honolulu via telephone. An operator interrupts the call, and while waiting to reestablish contact, news shifts to Washington D.C. and continues on to bulletins from Honolulu, Washington, Berlin, San Francsico and Ottawa. The shock of the moment is movingly captured in an extraordinary manner. A true gem of an audio historical document, courtesy of Ian Holder. This is a Real Audio file.
There are many more.
Hope this helps,