I'm not sure if placing such material on internet is
legal, but this two fragments of Codebraakers, provides
information, that should be easily available for everyone.
Vigenere is about real vigenere cipher, not what is
nowdays called as vigenere cipher,
Was It Roger Bacon Or Not is about mystical encrypted book
that is probably not from 13-th century [so it couldn't have
been written by R. Bacon] that is still unsolved.
online Vigenere encipher/decipher
online Vigenere cipher cracker