Google Books, 1621 edition* Solved: The Ciphers in Book iii of Trithemius's "Steganographia", PDF, 208 kB* Hill Monastic Manuscript Library article on Trithemius (includes links to photographs of various Trithemius first editions.
Издание 1997 года* Solved: The Ciphers in Book iii of Trithemius’s "Steganographia", PDF, 208 kB* Hill Monastic Manuscript Library article on Trithemius (включает ссылки на фотографии первых изданий книг Тритемия)* Cryptology in the 15th and 16th century — Penn Leary* Стеганография Иоганна Тритемия