The third floor of Cregan Library (St. Patrick's Campus) houses most print books related to history and historical studies.
Below you will find a list of the most common shelfmarks for history books within the Library.
Use Library Search for online shelf-browsing (Advanced Search with Subject).
The library’s eBook holdings on history can be found via Library Search.
Use the classification guide below for orientation
| Subject | Class number | Subject | Class number | |
| History, Geography (all countries) | 900-999 | Leinster | 941.8 | |
| History of Europe | 940-949 | Munster | 941.9 | |
| Ireland | 941.5 | England and Wales | 942 | |
|
Northern Ireland; Donegal, Monaghan,Cavan counties of the ROI |
941.6 |
Russia and neighbouring east European countries |
947 | |
| Republic of Ireland | 941.7 |