I stumbled upon this website http://www.shabkar.org/index.html in another forum, and thought that some here might be interested. Perhaps it has been linked to before? I couldn't find any reference to it here though.
It's a site about vegetarianism in Buddhism throughout all schools. There is an extensive list of sutras containing information about Buddha's view on vegetarianism, as well as texts from different authors such as Philip Kapleau, Sevan Ross and Hsuan Hua.