This is a perfect example of why I insist that all of my engravings have the composer on every title page (and then work name and composer last name in the titles on every subsequent page), even if they are all part of a collection by the same composer. Pages are inevitably separated, or are photocopied for page turns... or what have you... and then this happens. If I had even one penny for all the orphaned scores without composers I've come across, I would be a very wealthy man.