For basic biographical information on Saints, consult one of these print resources or websites. To locate specific proclaimations of canonization or beatification, try the Vatican website, or consult the Catholic Periodical and Literature index either in print, or online (now ATLA). In some cases, it will be very difficult to find supporting documents, as they are unpublished, but the CPLI should locate any published documents in sources such as L'Osservatore Romano, Acta Apostolicae Sedis, or English-language publications such as Origins.
The electronic edition of Acta Sanctorum provides access to the entire text (68 printed volumes published over 300 years), including all prefatory material, original texts, critical apparatus and indices along with Bibliotheca Hagiographica Latina reference numbers. Published in print format by the Société des Bollandistes, Acta Sanctorum is a principal source for research into the societies and cultures of early Christian and medieval Europe and the lives of saints.