Acknowledgments
Recognition or honor given to people who have influenced the book being published or who have made a difference in the life of the author. Also a section of a book containing such recognition.

Advance print run
Printing of a book completed before the book’s official release date.

Afterword
Closing remarks on the topic of the book or the process of writing the book. This material can be written by someone other than the author.

Appendix
Part of book that follows a chapter (end-of-chapter appendix) or, more commonly, that comes after all the chapters (end-of-book appendix). An appendix contains supplemental material, such as tables or source material, which does not conveniently fit into a chapter.

Audience
The group most likely to be interested in the subject matter of the book.

Author/Illustrator biography
Personal information and accomplishments of the author and/or illustrator.