Retirees and grandparents to three young boys, co-authors Ken M. and Barb J. Wallace spent 21 years as volunteer missionaries with Youth With A Mission (YWAM), an international Christian missions organization. Parents to one son, they also served as foster parents for a season. Ken is an accomplished woodworker, and Barb loves reading and photography. Ken and Barb currently live in western Montana with their Sheltie dog, Queenie.