Rex Miller (Round Rock TX) was a Professor of Industrial Technology at The State University of New York, College at Buffalo for over 35 years.  He has taught on the technical school, high school and college level for well over 40 years.  He is the author or co-author of over 100 textbooks ranging from electronics through carpentry and sheet metal ... Read morework. He has contributed more than 50 magazine articles over the years to technical publications.  Mark Richard Miller (Kingsville, TX) is Associate Professor and Department Chairman of the Industrial Technology Department  at Texas A&M University in Kingsville, Texas  teaching courses in plastics, metals, woodworking, computer drafting, quality and production control. He has co-authored six books with his father, publishes in trade magazines, and speaks at conferences. Show Less