Seed Savers Exchange, Incorporated

The Seed Garden: The Art and Practice of Seed Saving

By Lee Buttala, Shanyn Siegel, Jared Zystro, Micaela Colley

Seed to Seed: Seed Saving and Growing Techniques for Vegetable Gardeners, 2nd Edition

By Suzanne Ashworth, Kent Whealy, David Cavagnaro