File:Portrait of Professor William Hobson Mills, FRS.jpg

Fair use for William Hobson Mills
Though this image is subject to copyright, its use is covered by the U.S. fair use laws, and the stricter requirements of Wikipedia's non-free content policies, because:
 * 1) It is a historically significant photo of a famous individual.
 * 2) It is of much lower resolution than the original. Copies made from it will be of inferior quality.
 * 3) The photo is only being used for informational purposes.
 * 4) Its inclusion in the article adds significantly to the article because it brings to life the subject being described.