Wikipedia - Category: Animal Rights Activists
- Hyperlinked directory of articles about people active in animal rights issues.
- http://en.wikipedia.org/wiki/Category:Animal_rights_activists

A Loving Tribute to Henry Spira
- Essay. "In the mid-1970s, Henry Spira questioned getting involved in the farm animal issue because the farm animal issue was just too big, too 'unwinnable.' This is the man who went on to become a vigorous, prolific, courageous, wry, testy, ingeni
- http://www.upc-online.org/henry_tribute.html