Many people contributed to this project, each in their own way. We would like to extend our heartfelt thanks to all of them.

The members of the core production team are: Melanie Bender Martin, Angela Chu, Robert Ehrenreich, Emil Kerenji, Sarah Lumbard, Jürgen Matthäus, J. Luke Ryder, Gretchen Skidmore, Robert Twitty, Leah Wolfson, and Han Xie.

Special thanks are extended to Madeleine Cohen and Danie DeLeon, who served as critical members of the original core team. Without their strategic guidance, this tool would not have come to fruition.

We would like to thank the following colleagues at the United States Holocaust Memorial Museum: Andres Abril, Victoria Barnett, Bradley Bauer, Lenore Bell, Janet Benson Forville, Barri-Sue Black, Suzanne Brown-Fleming, Rebecca Carter-Chand, Subramaniam Chandrasekaran, Judith Cohen, Ronald Coleman, Kris Donly, Rebecca Erbelding, Robin Harp, Greg Jacobson, Timothy Kaiser, Heather Kajic, Alison Kitchens, Stacy Knepp, Jessica Knight, Joseph Kraus, Michael Levy, Megan Lewis, Wendy Lower, Allison Lurey, Steve Luckert, Julia McStravog, Anne Merrill, Ann Millin, Sarah Ogilvie, Lisa Pearl, Wrenetta Richards, Kristin Scalzo, Kyra Schuster, Paul Shapiro, Gwendolyn Sherman, Vincent Slatt, Suzy Snyder, Cara Sodos, Lesley Swift, Caroline Waddell, Kristen Walker, JoAnna Wasserman, Robert Williams, Elliott Wrenn, and Lindsay Zarwell.

We gratefully acknowledge the invaluable help of: Esther Adaire, Omri Bassewitch Frenkel, Sean Bye, Nicole Eaton, Tomasz Frydel, Yedida Kanfer, Daniel Kennedy, Kathleen Luft, Katarzyna Person, Hadar Sadeh Markin, Michal Shaul, Stephen Scala, Amy Simon, Rachel Smith, Lara Szypszak, and Anita Tarnai.