http://www.schirmer.com/composers/zwilich/ Provides a photograph, a biography and a link to information about "Symphony no. 1." http://www.music.fsu.edu/bios/zwilich.htm Includes a photograph and a biography. http://www.presser.com/zwilich.html Includes a photograph, a biography and a list of works. http://www.cyberecital.com/wso5.htm A review by Mary Ellen Hutton. http://www.worldbook.com/fun/whm/html/whm067.html Presents a short biography.