This photo was adapted from one by Louis Fabian Bachrach. The original was included in a group of 200 photographs of major contributors to the computer industry, exhibited at the Computer Museum, and published in the book Wizards and Their Wonders: Portraits in Computing, Christopher Morgan, photos by Louis Fabian Bachrach (New York: ACM Press, 1997), 172-3.

Photo by Louis Fabian Bachrach 1997 (all rights reserved), modified in Microsoft Image Composer