Graham’s Treatise on Bread and Bread-Making includes a history of bread, discussion of various grains and which make the best breads, preparation of flour and other ingredients, the process of fermentation, how to prepare and bake bread dough, and discussion of bread varieties. The book describes Graham’s preference for unadulterated flour that is free of chemical additives (used even in those early times to make bread whiter in color). He believed that firm bread made of coarsely ground whole-wheat flour was more nutritious and healthy.