John Isaacson is a cartoonist, screen-printer, and teacher. He began screen-printing in high school and has sold his t-shirt designs as a street vendor, and worked in a t-shirt printing shop. In addition to Do It Yourself Screenprinting, he self-publishes the mini-comics Pyromania, Feedback, and Grumpy McBumbles. He has taught cartooning for ten years and currently teaches in Portland, Oregon through Writers In The Schools, the Independent Publishing Resource Center, and at Em Space Book Arts Center. More his art and books are available at www.unlay.com