A prolific author and respected instructor, Mr. Alan Jefferis, has taught drafting technology at Clackamas Community College, an Authorized AutoCAD Training Center, for more than thirty-one years. Prior to that, Mr. Jefferis taught for four years at Mt. Hood Community College in Gresham, Oregon. He brings a wealth of professional experience to his writing, including eight years of drafting for structural engineers and thirty years of residential designing. Mr. Jefferis currently owns Residential Designs. He is a former Autodesk Developer Network member and a former member of the A.I.B.D. Mr. Jefferis obtained his BS degree from San Diego State University in 1972. He has authored or co-authored numerous textbooks on architectural drafting and design and effectively working with AutoCAD.
Tereasa has worked as an architectural designer and HVAC specialist for over 10 years. She is currently teaching architectural design and CADD classes at Mt Hood Community College. She has served as a contributing author for the text AutoCAD for Architecture, Architectural Drafting and Design and Residential Design, Drafting and Detailing.