Perhaps the most comprehensive collection of information is available from the National Agricultural Library USDA, published in April 2008. Entitled Vegetarian Nutrition Resource List, this 25-page document provides names of articles, pamphlets, and books covering vegetarian nutrition, plus suggestions on ways to obtain the various materials.

You can also find information at these sources:

• Vegetarian Food Experts: Ask questions of the vegetarian food experts on AllExperts.com.

• The New York Times: Vegetarianism: All the Times' articles on vegetarianism collected into one section.