The true first edition of Bacher's phenomenal book is this Japanese edition which preceded the English language edition by a full year. This is the first printing of that Japanese edition.
From the publisher:
Hans Bacher is acknowledged as one of the greats of production design for animation and he has been given unparalleled access to Disney's archives to uncover eye-popping examples of both his own work and that of his colleagues. With illustrations from Bambi, Beauty and the Beast, The Lion King, Mulan, Lilo & Stitch, Brother Bear, and many more - it is a visual feast of never-before-seen artwork, complete with insight from the artist on how and why they were designed as they were. With 400 never-before-seen illustrations.
"Dream Worlds is a must have for its visuals alone - I can only describe them as gorgeous." .. World Animation Journal