Here’s the link to download a copy of the comic itself under a Creative Commons license. In case you’ve never heard of it, Creative Commons means you can’t sell this thing or tell people you did it, which you wouldn’t anyway.
The Power of High School Algebra! by Terry Peppers is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at http://www.terrypepperstips.com/Tips/a-tip-for-math-teachers/.