Reply To: The official Challenge 10 tips and hints thread
The Body in My Library › Forums › Harry’s Meeting Place › The official Challenge 10 tips and hints thread › Reply To: The official Challenge 10 tips and hints thread
27th December 2023 at 4:17 pm
#92934
I_am_Sid
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Just after publishing his famed Trifid and Foursquare ciphers, Dellastelle died in April 1902. A few months later in *December 1902*, an American Librarian used this , at that time new cipher, to encrypt her regret.