For either a public domain photograph or a photograph for which I control the rights, I would not charge a nonprofit organization any fee at all for exhibition or publication use, although I would request reimbursement of any cost to us. At the National Museum of American History, we charge reproduction fees only for commercial use. But if the photograph is not in the public domain and we know we don't control copyright, we ask the user to assume responsibility fo r obtaining permission from the copyright holder. If I know who the copyright holder is--especially a living photographer--I will not release the work for reproduction at all, but will refer the user to the photographer. --David Haberstich