Navigate to iona.on.worldcat.org, the online catalog and type Irish Civilization into the search box. You will notice relevant titles within the results list. Electronic books will be marked by an "Access Online" link underneath the title.
Please note that you can also browse the Br. Charles Quinn Irish Collection located on the second floor, South Wing of Ryan Library for print books. The call numbers for this collection begin with a I. If you browse the I 941s in this special collection, you may find several titles of interest.