When writing his Haiku for Coffee Lovers (and other Haiku for… books), David Ash said he asks several guest editors to give feedback on his books, then includes their names on the acknowledgments page. They turn out to be his best customers. So you may want to lengthen your acknowledgments page to accommodate those who helped on your book.
This is part of a series of articles provided by Nancy Burkhalter and Jack McKee following the February meeting on ways publishers can work together. Click on member suggestions in labels to see these articles and any follow-up.