Computers provide access to Assumption University Library automated catalog. The library OPAC lists materials found at both the St. Gabriel's Library and Cathedral of Learning Library and contains information on over 500,000 books, periodicals, audio-visuals, electronic medias and other materials the library holds. Library provided OPAC at every floor to comfort users. How to use Online Public Access Catalog - access to our library collections is through an online catalog searchable in all library and from remote site both on and off campus. Users may begin at the Menu Screen. You will be offered a choice of searching by author, title, subject, call number, accession number, series and ISBN.