sentences:  Jung carefully recorded this imaginative journey in six black-covered personal journals (referred to as the "Black Books"); these notebooks provide a dated chronological ledger of his visions and dialogues with his soul.Beginning in late 1914, Jung began transcribing from the Black Book journals the draft manuscript of his "Red Book", the folio-sized leather bound illuminated volume he created to contain the formal record of his journey.Jung repeatedly stated that the visions and imaginative experiences recorded in the Red Book contained the nucleus of all his later works.