If anyone contributed to your book, this is also where their information would be listed under the heading entitled List of Contributors. 

This section is not the same as the acknowledgments page although you are acknowledging the contributions of these people. It is more than a simple thank you

The List of Contributors includes relevant biographical information, like membership in certain organizations, current position demonstrating expertise in an area, academic affiliations or published works.

Contributors are listed in alphabetical order by last name but written in standard order. So Henry S. Pingleton is not written Pingleton, Henry S. but as Henry S. Pingleton and comes before Johnny Quimby and after Yori Oliver.

You might include editors, translators, publishers, agents, professional proofreaders, or professors in this section. Librarians and research assistants deserve their due as well. Don’t feel as if you have to include every publication each contributor wrote in this list. Instead, include the one or two most relevant to your book topic. 

Assignment: Consider whether you need a formal List of Contributors or can get by with the more formal Acknowledgements.