Regarding the photo question once more, if a museum hires someone under the term "work for hire," or the individual is employed by the museum full-time, then the copyright issue gets vague. I say vague because arts law always favors the creator of the image, no matter who possesses the film. If you wish to own the copyright to images taken by a photographer, secure those copyrights through a contract drawn up by an attorney--then it is a done deal--there is no other sure way. The American Law Institute sponsors wonderful workshops on copyright and other important museum issues--ALI-ABA (American Law Institute - American Bar Association) holds conferences all the time--they are pricy, but well worth it.