The overlap, and the exclusions, are designed to enable this book to cover Tolkien's art thoroughly and completely without rendering Pictures superfluous. For instance, since Pictures contains several versions of the Tree of Amalion, this book reproduces just one, devoting its multiple-version coverage to other matters. Since The Father Christmas Letters is easily available, this book does not duplicate Pictures' selection from that. Tolkien's pattern designs from late in his life are extensive, so this book chooses an entirely different selection than Pictures . A few early drafts of particular scenes from Pictures are not included here, but this book makes up for that by including other previously unpublished drafts of the same scenes.
Few authors are fortunate enough to have their works served so well.