 Some new drawings were included, mostly by Audubon's youngest son John Woodhouse Audubon, though Audubon and members of Bowen's team also contributed.The Bien Edition (after chromolithography pioneer Julius Bien), was a full-sized reissue published in 1858 by Roe Lockwood in New York under the supervision of John Woodhouse Audubon.Due in part to the Civil War, the edition was never finished; only 15 parts of the 44 part series were completed.