14 Dictionary codes and book ciphers
In 1918, toward the end of World War I, a German radio station sent the following message to a recipient in Mexico:1
49138 27141 51336 02062 49140 41345
42635 02306 12201 15726 27918 30348
53825 46020 40429 37112 48001 38219
50015 43827 50015 04628 01315 55331
20514 37803 19707 33104 33951 29240
02062 42749 33951 40252 38608 14913
33446 16329 55936 24909 27143 01158
42635 04306 09501 49713 55927 50112
13747 24255 27143 02803 24909 15742
49513 22810 16733 41362 24909 17256
19707 49419 39408 19801 34011 06336
15726 47239 29901 37013 42635 19707
42022 30334 06733 04156 39501 03237
14521 37320 13503 42635 ...
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