Erik Otto, Gathering.
Have you heard about The Working Proof? Seeking to promote art and social responsibility, it was created by Anna Corpron and Sean Auyeung, the fantastic printmaking and design team behind Sub-Studio and the always-enjoyable Sub-Studio design blog. Like Tiny Showcase, The Working Proof donates part of the sale from each print to a charity of the artist's choice, with the works ranging in price from $30-75. With a new print released every Tuesday at 1:30 EST (the Erik Otto print, above, is the latest), 14 great works that support 14 different causes have been made available so far, with many more to come.