Another question that has been puzzling me recently — where do all of the digital Civil War pictures come from? I know of the online collection at the Library of Congress, but that doesn’t seem to account for all of those that I see online.

Is there a copyright issue similar to printed works? Some that I see are attributed, generally to the Library of Congress. Many, however, aren’t. The numerous Wikipedia articles, particularly the biographies, come to mind. Is it as simple as a right-click, copy and paste? This doesn’t seem right. Or are some folks simply not doing the right thing?