The McGarrity Collection consists of around 3,000 monographs focusing on Irish history, literature, folklore, description and travel, music, and Irish - American history. Among the many pamphlets in the collection are historical ones relating to the Eighteenth Century, particular to the 1798 Rebellion and the Act of Union. The collection also contains runs of Irish and Irish - American journals such as Hibernian Magazine, Walker's Hibernian Magazine, Dublin University Magazine, Proceedings of the Royal Irish Academy and many others. Among the newspapers is a complete run of The Irish Press (Philadelphia: 1918-1922), which for some time was owned and edited by Joseph McGarrity. See also the Digital Library Joseph McGarrity Collection for digital content from this collection.
- The McGarrity Papers at Villanova (Group I) consists of eight archival boxes with personal papers, photographs, and other records relating to the McGarrity family.
- The McGarrity Papers at Villanova (Group II) consists of seven archival boxes of personal papers, memorial material, correspondence, and photographs. This collection was assembled by Joseph McGarrity's eldest daughter, Mary Joseph McGarrity Shore (1912-2000).
- A larger collection, The McGarrity Papers, are in the National Library in Ireland. A microfilm copy (25 reels) of these papers are available in Falvey Library.
This collection was donated to Villanova University in 1940 by Joseph McGarrity. Items, published before 1940, have since been added.