Nudity Saves America by Rhona Mahony is licensed under a Creative Commons Attribution 3.0 Unported License.
Based on a work at http://wildbee.org/2013/09/11/nudity-saves-america/.
You may also download this scalable vector graphic (svg) file, which you are free to change however you like. You can make it big or small and it will still print out crisply. Try Inkscape, the free and open-source alternative to Adobe Illustrator.