Exploring Drafting
John R. Walker is a longtime author for G-W. He is the author of 13 textbooks (not all G-W products) and many magazine articles. John 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. John also worked as a machinist for the US Air Force and as a draftsman at the US Army Aberdeen Proving Grounds. He is now retired from teaching. Bernard D. Mathis has taught high school drafting for more than 30 years. He teaches at Sterling High School in Sterling, Colorado. Bernie has bachelor's and master's degrees in industrial arts education from the University of Northern Colorado.