Obsessive Map-Maker Jerry Gretzinger's Never-Ending Project

It's alive, it changes. My hand puts the paint on the paper, and then I step back and say, 'Wow, look at that!' as though I was not the perpetrator. I... I'm just the observer.
For more obsessive hand-painted maps, don't miss Paula Scher's typographic treasures, a fine recent addition to my favorite books on maps.
This post also appears on Brain Pickings, an Atlantic partner site.