"This study resource draws almost exclusively upon the collections of the National Library, including the Library’s rich holdings of books, newspapers, photographs, drawings, proclamations and, not least, manuscript material.  In all, over 500 images have been selected for study and analysis.

The Act of Union Virtual Library is a unique collection of pamphlets, newspapers, parliamentary papers and manuscript material contemporary with the 1800 Act of Union between Ireland and Britain. The entire content is searchable bibliographically, the search results displaying individual images that can be browsed by turning the pages of each virtual book or document.