Files W.F.F. Archive Pearl Harbor Research Records Correspondence Related to the Certain Aspect of Magic In the Cryptographic Background of the Various Official Investigations, 1955-1957
Certain Aspects of "Magic" In the Cryptological Background of the Various Official Investigations Into the Attack on Pearl Harbor
Friedman Seeks Information from GCHQ Official
Friedman's Interest In the Broadcast of the "Winds Message"
Friedman's Letter of Appreciation to GCHQ Official
GCHQ Letter to William Friedman Regarding Pearl Harbor
Press Article "Our Good Luck At Pearl Harbor"
Winds Message (War Against U.S. and Britain) Broadcast after Attack on Pearl Harbor