It is impossible to name all of the colleagues and clients who have contributed to developing the knowledge contained in this book. The knowledge has developed over time through numerous projects and programs. We feel privileged to be part of the CCL community; we want to acknowledge the entire community as the source of our knowledge and thank them for their support in putting this handbook together.
There are particular colleagues to whom we do need to draw special attention because they provided valuable input and feedback on various chapters. Our special thanks go to John Alexander, Heather Champion, David Day, Emily Hoole, Ted Grubb, Tim Haynes, Jennifer Habig, Michael Hoppe, Bill Passmore, David Powell, and Peter Scisco. We also acknowledge the authors of chapters in the first and second editions of the handbook on whose valuable work we built: Keith Caver, Craig Chappelow, Maxine Dalton, Christina Douglas, Victoria Guthrie, Sharon Ting, Wayne Hart, Michael Hoppe, David Horth, Martha Hughes-James, Lily Kelly-Radford, Ancella Livers, Dana McDonald-Mann, Russ Moxley, Patricia O'Connor, Patricia Ohlott, and Mary Lynn Pulley.