| Code | Earliest Year | Latest Year | Newspaper |
|---|
| BNL | 1738 | 1884 | Belfast Newsletter |
| British Evening Post | 1791 | 1791 | British Evening Post |
| Bury + Norwick Post | 1841 | 1841 | Bury + Norwick Post |
| BWJ | 1830 | 1834 | Berrow's Worcester Journal |
| CalcuttaG | 1822 | 1822 | Calcutta Gazette |
| Caledonian Mercury | 1816 | 1816 | Caledonian Mercury |
| CG HA | 1788 | 1794 | Cork Gazette and Hibernian Advertizer |
| CG&GA | 1794 | 1796 | Cork Gazette and General Advertizer |
| CJ | 1812 | 1812 | Clare Journal |
| CJEA | 1807 | 1810 | Clare Journal and Ennis Advertiser |
| ClomelGaz | 1791 | 1791 | Clomel Gazette |
| ClonmAdv | 1832 | 1832 | Clonmel Advtiser |
| CMC | 1808 | 1811 | Cork Morning Chronicle |
| Cork Const | 1824 | 1846 | Cork Constitution |
| Cork Examiner | 1847 | 1847 | Cork Examiner |
| DEP | 1736 | 1837 | Dublin Evening Post |
| DG | 1739 | 1739 | Dublin Gazette |
| DHibJ | 1781 | 1787 | Dublin Hibernian Journal |
| DroghedaJ | 1837 | 1837 | Drogheda Journal |
| Dub Mer Adv | 1825 | 1825 | Dublin Mercantile Advertiser |
| DWJ | 1725 | 1752 | Dublin Weekly Journal |
| EnnisC | 1810 | 1829 | Ennis Chronicle |
| Exeter Examiner | 1836 | 1836 | Exeter Examiner |
| FDJ | 1751 | 1784 | Faulkner's Dublin Journal |
| Finns Leinster J | 1772 | 1772 | Finns Leinster J |
| FJ | 1763 | 1874 | Freeman's Journal |
| GA London | 1751 | 1751 | General Advertiser London |
| GM | 1760 | 1774 | Gentleman's Magazine |
| HC | 1769 | 1797 | Hibernian Chronicle |
| HDM | 1769 | 1786 | Hoey's Dublin Mercury |
| HibChron | 1770 | 1780 | Hibernian Chronicle |
| IT | 1864 | 1864 | Irish Times |
| LC | 1768 | 1905 | Limerick Chronicle |
| LC_LM | 1774 | 1774 | Limerick Chronicle (copy in Limerick Museum) |
| Leeds Times | 1844 | 1844 | Leeds Times |
| LEP-CS | 1828 | 1839 | Limerick Evening Post and Clare Sentinel |
| LGA | 1804 | 1820 | Limerick general Advertiser |
| LH | 1831 | 1833 | Limerick Herald |
| LHMA | 1788 | 1789 | Limerick Herald Munster Advertiser |
| LJ | 1791 | 1791 | Limerick Journal |
| London Chron | 1786 | 1786 | London Chronicle |
| LondonEP | 1740 | 1744 | London Evening Post |
| LondonG | 1721 | 1800 | London Gazette |
| LondonMgChron | 1857 | 1857 | LondonMgChron |
| Lords Munster Herald | 1788 | 1788 | Lords Munster Herald |
| LRTV | 1854 | 1879 | Limerick Reporter and Tipperary Vindicator |
| LS | 1837 | 1841 | Limerick Standard |
| LT | 1835 | 1837 | Limerick Times |
| MA | 1830 | 1832 | Munster Advertiser |
| MJ | 1740 | 1750 | Munster Journal |
| Nation | 1839 | 1839 | Nation |
| Public Ledger London | 1760 | 1760 | Public Ledger London |
| Pue'sO | 1733 | 1755 | Pue's Occurrences |
| Syd Gaz | 1840 | 1840 | Sydney Gazette |
| The Era | 1841 | 1841 | The Era |
| The Times | 1813 | 1882 | The Times (London) |
| WMT G | 1835 | 1835 | Westmeath Guardian |
| WMT J | 1813 | 1829 | Westmeath Journal |
| Yorkshire Gazette | 1844 | 1844 | Yorkshire Gazette |
