Gilbert, Jaime & Mario Hernandez's self-published debut. The series was then picked up and published by Fantagraphics in 1982.
The first printings that were sold at the 1982 San Diego Comic-Con had pages of art printed from reverse side of the original art in error. Unknown number of copies sold. After the convention the printer rebounded correctly unsold copies (Per Mike Catron at the San Diego Comic-Con July 21, 2006).