Human rights and food sovereignty
Food Empowerment Project
Human Rights Watch
Farmworker Justice
Coalition of Immokalee Workers
La Via Campesina: International Peasant’s Movement
Equal Exchange
Fair World Project

The business of food
First the Seed: The Political Economy of Plant Biotechnology – Jack Ralph Kloppenburg
Food Politics: How the Food Industry Influences Nutrition and Health – Marion Nestle

The environment
Something New Under the Sun: An Environmental History of the 20th Century – J. R. McNeill

Seeds and gardens
How to Grow More Vegetables – John Jeavons
Hudson Valley Seed Library
Rocky Mountain Seed Alliance
Seed Savers Exchange
Organic Seed Alliance
Native Seeds/SEARCH

Plant-based and vegan cookbooks
Laurel’s Kitchen – Robertson, Flinders, Godfrey
Vegetarian Cooking for Everyone — Deborah Madison
Unplugged Kitchen – Viana LaPlace
Vegan Soul Food – Bryant Terry
Clean Food – Terry Walters

Books on health and nutrition
The China Study – T. Colin Campbell, PhD, and Thomas Campbell III
Becoming Vegan – Brenda Davis, RD, and Vesanto Melina, MS, RD
Healing with Whole Foods – Paul Pitchford

Useful websites
Recipes, ingredients, and assorted information — all about food ingredients, plant- & animal-derived — simple information on vitamin/mineral/protein content of plant foods — substitution guide for modifying recipes— a lot of information about why sugar is/isn’t vegan–so you know which wines & beers are vegan…which should generate a lot of questions…

Food Safety
The Center for Science in the Public Interest
The Organic Consumers Association

On general cooking
Professionally, I have found the following books to be invaluable. Vegan? No, they’re not. But they provide such encyclopedic information on plants, food, culture, and gastronomy that they belong in any serious food library. If you know your substitutions, you will find these books to be immensely useful.

Oxford Companion to Food
On Food and Cooking
Food Lover’s Companion
Ethnic Food Lover’s Companion
Larousse Gastronomique

Now and then, I experience kismet in a used book store, and find something like The New Oxford Book of Food Plants.