This book is the first to present Wordsworth's greatest poem in all three of its separate forms. It reprints, on facing pages, the version of "The Prelude" was was completed in 1805, together with the much-revised work published after the poet's death in 1850. In addition the editors include the two-part version of the poem, composed 1798-99. Each of these poems has its distinctive qualities and values; to read them together provides an imcomparable chance to observe a great poet composing and recomposing, through a long life, his major work.

(From Goodreads)