https://organicconsumers.org/campaigns/mad-cow-mad-deer-disease/
https://organicconsumers.org/
https://www.humanedecisions.com/documentary-film-mad-cowboy-the-story-of-howard-lyman/
https://www.simonandschuster.com/books/Mad-Cowboy/Howard-F-Lyman/9780684854465
http://www.earthsave.org/
https://www.alibris.com/No-More-Bull-The-Mad-Cowboy-Targets-Americas-Worst-Enemy-Our-Diet-Howard-F-Lyman/book/33132792