Some of our favorite books on seed-saving, growing dry beans & grains, and staple crops: ​

​Ashworth, Suzanne. Seed to Seed: Seed Saving and Growing Techniques for Vegetable Gardeners. Seed Savers Exchange, 2002.
 
Boutard, Anthony. Beautiful Corn: America’s Original Grain from Seed to Plate. New Society Publishers, 2012.
 
Buttala, Lee et al. ​The Seed Garden: The Art and Practice of Seed Saving. Seed Saver's Exchange. 2015

Deppe, Carol. The Resilient Gardener: Food Production And Self-Reliance In Uncertain Times.  Chelsea Green, 2010. (Carol's other books "Breed Your Own Vegetable Varieties" and "The Tao of Vegetable Gardening" are also excellent)
 
Jason Dan. Saving Seeds: A Home Gardener's Guide to Preserving Plant Diversity. Salt Spring Seeds, 2020.
 
Jason, Dan. The Whole Organic Food Book: Safe Healthy Harvest From Your Garden To Your Plate. Raincoast Books, 2001.

Logsdon, Gene. Small-Scale Grain Raising, Second Edition: An Organic Guide to Growing, Processing, and Using Nutritious Whole Grains, for Home Gardeners and Local Farmers. Chelsea Green, 2009. Original edition published by Rodale Press, Inc., 1977.

Navazio, John. The Organic Seed Grower: A Farmer's Guide to Vegetable Seed Production. Chelsea Green, 2012. 
 
Pitzer, Sara. Homegrown Whole Grains: Grow, Harvest, and Cook Wheat, Barley, Oats, Rice, Corn, and More. Storey Publishing, 2009.