TheCodeBreakers
Much of this complexity, however, was
vitiated by the clerk's habit of only partially encoding messages and
enciphering the rest in a monoalphabetic substitution that appears to
have been the same as for the code. Mrs. Friedman illustrated
the process with an actual message (which may have some slight
errors in it):
plaintext Anchored in harbor. Where and when are you sending
fuel?
in ABC Code 07033 52725 24536
+1000 08033 53725 25536
Acme Code word BASHY ouvs WINUM
substitution MJFAK ZYWKH QATYT JSL QATS QSYGX OGTB
In her office—first in a building near the Bureau of Printing and
Engraving, then in a building on Pennsylvania Avenue opposite the
Willard Hotel—Mrs. Friedman solved 12,000 messages in just her first
three years for the Coast Guard, the Bureau of Customs, the Bureau of
annaabi.ee 
