TheCodeBreakers
Crown copyright is acknowledged for the following illustrations
from Great Britain's Public Record Office:
S.P. 53/18, no. 55, the Phelippes forgery,
and P.R.O. 31/11/11, the Bergenroth reconstruction.
Published by arrangement with The Macmillan Company
FIRST PRINTING SECOND PRINTING THIRD PRINTING FOURTH PRINTING FIFTH PRINTING SIXTH PRINTING SEVENTH PRINTING
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SIGNET TRADEMARK: REG. TJ.S. PAT. OFF. AND FOREIGN COUNTRIES
REGISTERED TRADEMARK---MARCA REGISTBADA
HECHO EN CHICAGO, U.S.A.
SIGNET, SIGNET CLASSICS, SIGNETTE, MENTOR AND PLUME BOOKS
are published by The New American Library, Inc.,
1301 Avenue of the Americas, New York, New York 10019
FIRST PRINTING, FEBRUARY, 1973
PRINTED IN THE UNITED STATES OF AMERICA
To my Parents
and my Grandmother
Contents
A Note on the Abridged Version
Preface
A Few Words
1. One Day of Magic: I
2. One Day of Magic: II
3
annaabi.ee 
