Dave Christensen is a pinball machine artist. Actually, David G. Christensen ( Mad Dog Dave ) is "THE" pinnacle of pinball artists., as a master illustrator line artist, his ability, imagination, and " NO HOLES BARED RULE BREAKING " sets the highest standard of this novelty art. Author of " Slot Machines ". This pictorial review is also a great example of the fine art of line Illustration. Ken Kupietz friend and associate artist since 1969.