Aside from our online catalogue, the Library has a number of collection finding aids available to researchers:
- Catalogue of Manuscripts in the Public Library of Armagh, 1928, compiled by James Dean, Deputy Librarian,
- Early English books in Armagh Public Library: a short-title catalogue of books printed before 1641, 1977,
- an extract of genealogical reference works from the main catalogue, and
- Index to Annotated Irish newspapers collected by Henry Irwin, ranging from 9th of February 1788 to 14th of November 1799
