1.Secret communications 1
2.Ciphers in the American Revolutionary Era,1775-1789 22
3.Book Codes and repertories in the American Revolutionary era,1775-1789 47
4.Nomenclators in the American Revolutionary Era 73
5.An Anxious Republic,1789-1801 118
6.Confidential Reports from Europe and Mexico,1801-1815 151
7.Confidential Reports from Europe and Mexico,1816-1848 192
8.A New Generation of Codes 214
Bibliography 262
Apendix 271
Index 617