A reader sends a link to an odd story from the Central Pennsylvania Patriot-News, under the headline Raw deal: Pennsylvania artwork now under U.S. Postal Service copyright. Apparently the U.S. Postal Service is preventing certain publicly-funded New Deal artworks from being photographed, but if so, my guess is that they are doing so not because the work is "now under Postal Service copyright," but, rather, because it's on their property, and they aren't obligated to allow people onto their property to take pictures. That doesn't make it right, as a matter of policy, but there is a difference.