Tag index

#Black-Chamber

Events indexed under #Black-Chamber — 1 entry in the record.

1 events From Oct 31, 1929 To Oct 31, 1929 Open in filter view →
DateEventLanesStatus
1929-10-31Stimson Closes Yardley's Black Chamber, Briefly Interrupting U.S. Peacetime Signals Intelligence
Henry L. Stimson · Herbert O. Yardley · State Department · War Department · +1
confirmed