| OEP | Old English Poetry, 600-1100 |
| MEA | All Middle English poetry |
| MER | Middle English Romances, 1100-1500 |
| MEL | Middle English Lyrics and Ballads, 1100-1500 |
| MEP | Other Middle English Poetry, 1100-1400 |
| C15 | Fifteenth century poetry |
| EFS | Emblems, epigrams, and formal satires, 1500-1700 |
| Song | Songbooks, 1500-1700 |
| Tud | Tudor Poetry, 1500-1603 |
| Jac | Jacobean and Caroline Poetry, 1603-1660 |
| Res | Restoration Poetry, 1660-1700 |
| C18 | All Eighteenth Century poetry |
| C18A | Early Eighteenth Century poetry, 1700-1750 |
| C18B | Later Eighteenth Century poetry, 1750-1800 |
| C19 | All Nineteenth Century poetry |
| C19A | Early Nineteenth Century Poetry, 1800-1835 |
| C19B | Mid Nineteenth Century poetry, 1835-1870 |
| C19C | Late Nineteenth Century poetry, 1870-1900 |
| Misc | Miscellaneous and Collections |