Two cryptographers use grids to decode a letter at the FBI Headquarters in Washington DC.
Washington DC USA Date:1942, August Duration:2 min 52 sec Sound:Yes
Recording messages at the FBI (Federal Bureau of Investigation) Headquarters in Washington DC.
Two cryptographers seated at a desk in the laboratory. Stacks of books in the background. An alphabet roll on the desk. One cryptographer uses grids to decode a letter. The other records the decoded message. The first cryptographer holds up the grid. The coded letter. He places the grid onto the letter.
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