The Anglo-Saxon futhorc, the runic alphabet used in early medieval England, extended the older twenty four letter Germanic futhark with additional letters to represent sounds particular to Old English, reaching twenty nine letters in its fullest form. The Old English Rune Poem gives each of those twenty nine letters its own short stanza, moving through the row in order and building each verse around the object, animal or idea the letter's name denotes: Feoh, cattle or wealth, opens the poem; Ur, the aurochs, a now extinct wild ox, follows; Thorn, an actual thorn, painful to grasp; and so on through Os, Rad, Cen and the rest to Ear, the grave, at the close.
This structure, a name-word built into a short descriptive or gnomic verse, is exactly what this atlas already records for each of the twenty nine futhorc runes: the poem is not commentary added after the fact but the primary source those descriptions are built from. Where a rune's entry here explains what its name means and what image the tradition associated with it, that explanation traces to this poem's stanza for that letter, one of only a small number of surviving witnesses to how the Anglo-Saxons themselves glossed their own runic alphabet rather than how modern reconstruction has approached it from outside.
Two related poems in other Germanic languages, the Old Norwegian and Old Icelandic rune poems, cover comparable ground for their own, different runic rows, and the three together form the main surviving evidence for how medieval Northern European cultures explained their runes in their own words.