Munitions Buildings, Washington D.C.
20 april
1936
Dear Mrs
Driscoll
We think there are Japanese spies in our buildings.
If you succeed in deciphering messages
issued by
naval japonese attaché, perhaps we would
know
more. They were sent the last year, but we have kept
them in our backlog. Fortunately we have the key
for this period.
Admiral William D. Leahy,
Message intercepted on May 23 1935:
24098 WIXSC YHVES VTOOM TULZU KICXD OLYXV
ARMER PEXBT UJKFY NGECY RLIWW BJJEN CAQNS
SYWPY DVVXU MTEUL DOPPX XIRII SLFEZ RKHUW
FUITF NNYBC OFJHU RXEWH OIXOP TRPAX EMTOP
YSSEZ DRSEW FMPUB OXYMU MPYHB EVNUH YLLIX
WAAVA GWDDA MLQUT LOYJQ QNXAA XORWZ UISSU
KKMMA ZQUTY YETAB BWOZA RAGYO SWYYM RPIQV
GMTAP IQHOT YNNER WMMOT QMIXA MESQR NHAMO
QOHYP YQOWA VALAT YSUBT ORWKM AMHPN AXKYL
FUWPT TKBYR OGKUM AQTUH ISXLK HUCMI VQTEI
JLVWK UYLWA DEHWU MUJRN YWRGM UJTUZ OYTPC
ALPCT YKQYU XDMYG YWEMO LYIXC QUKCQ GGEF
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