iv
About the Authors
John R. Walker is the author of 13 textbooks and has written many magazine articles.
Mr. Walker did his undergraduate studies at Millersville University and has an MS in
Industrial Education from the University of Maryland. He taught industrial arts and
vocational education for 32 years and was Supervisor of Industrial Education for
fi ve years. Mr. Walker also worked as a machinist for the US Air Force and as a drafter
at the US Army Aberdeen Proving Grounds.
Bernard D. “Bernie” Mathis has bachelor’s and master’s degrees in Industrial
Arts Education from the University of Northern Colorado. He has taught mechanical
engineering drawing and architectural engineering drawing for more than 30 years
and computer-aided drafting for more than 20 years. Prior to teaching drafting classes,
Mr. Mathis taught other industrial arts courses, including woodworking, metalworking,
general crafts, leather crafts, lapidary, and jewelry. Mr. Mathis has been sole proprietor of
his own drafting and design business for 25 years.
Shauna A. Scribner has associate’s of applied science degrees in Design Drafting and
Metals Technology from Albuquerque TVI Community College, a bachelor’s degree in
Training and Technology from the University of New Mexico, and a master’s degree and
doctorate in Workforce Education and Development from Southern Illinois University
Carbondale. She has taught computer-aided drafting (CAD), engineering graphics, and
manufacturing technology for more than 20 years. Prior to working as a CAD facilitator,
Dr. Scribner worked in the public sector as a lead drafter and was the owner and operator
of her own CAD company for 22 years. For the past 15 years, Dr. Scribner has worked as
a professor and CAD program coordinator at Southwestern Illinois College.