The Holy See has put the “official documents” online. The three acta noted below contain the principal decrees, encyclicals, decisions of the Vatican offices and other notices of ecclesiastical appointments and interests. Church laws contained in the Acta are considered promulgated when published in these organs of communication and official three months from the date of publication unless otherwise mentioned. The Vatican’s website is not part of the official documentary services of the Holy See; it is a method of communication. So, access to this information online is an incredible gift:
Acta Sanctae Sedis (1865-1908)
Acta Apostolicae Sedis (1909-2007)