File:Photo of William Scott by James Scott in 1959.jpg

Description
A photograph by James Scott of William Scott during a visit by Mark Rothko to the Scotts at Hallatrow, 1959.

Source
The image is cropped, desaturated and tonal balance adjusted from the image at http://venicebiennale.britishcouncil.org/people/william-scott/image/352

The image is copyright "© James Scott 2009. Courtesy of the William Scott Foundation"

Fair use in William Scott
The image is used in an article about art and life of the artist William Scott and is used for the purposes of identification. It is considered that this increases the reader's understanding of the subject, and hence its educational value. The image is low resolution and only uses a portion (approximately one-quarter) of the original image. It is considered that this usage will not cause commercial harm to the copyright holder. It is believed that this is fair use and does not infringe copyright. There is no known free alternative available, and one cannot be made as the subject died in 1989.

According to section 107 of the United States Copyright Act of 1976 :

The fair use of a copyrighted work...for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright.

The image is used for non-profit purposes. This factor is noted as relevant by the Act.