apollo. (2026). Kryptos ciphertext (K1 to K4), plaintexts of K1 to K3, the K4 cribs, the tableau and the Morse text (Version 1.0) [Data set]. Mysteries Department. https://mysteriesdept.com/datasets/DAT0D7HTGV65YZM/kryptos-ciphertext-k1-to-k4-plaintexts-of-k1-to-k3-the-k4