MacGill has a MFA degree in photography from the University of Arizona. In 2005 he was in 15th place on a list of the 100 most important people in photography compiled by American Photo magazine.
- Steven Heller, Charles Traub, Adam Bell (editors) (2006). The Education of a Photographer. New York: Allworth Press. ISBN 9781581158304.
- Philip Gefter (December 3, 2006). 'What’s New in Photography: Anything but Photos'. The New York Times..
- Kathleen Allen (September 22, 2006). Speaker Series begins today at CCP. AZ Daily Star. (subscription required)
- [staff] (May/June 2005). The 100 Most Important People in Photography, 2005. American Photo.