Throughout his life, Walt Whitman continually revised and re-released Leaves of Grass .
Each edition was unique, with its own character and e.
Leaves of Grass: A Textual Variorum of the Printed Poems includes all the variants that Whitman ever published, from the collection\'s first appearance in 1855 through the posthumous "Old Age Echoes" annex Printed in 1897.
He added and deleted words, emended lines, divided poems, dropped and created titles, and shifted the order of poems.
Throughout his life, Walt Whitman continually revised and re-released Leaves of Grass