Lewis Carroll loved ciphers. Between 1858 and 1868 he invented four and recorded them in his diary: two matrix ciphers and two polyalphabetic ciphers: the Telegraph Cipher and the Alphabet Cipher. He submitted the latter two for publication, and personally used them to write letters to his child friends.
"The Alice Cipher,"
Word Ways: Vol. 46
, Article 14.
Retrieved from: https://digitalcommons.butler.edu/wordways/vol46/iss2/14