The Breastfeeding Mother's Guide to Making More Milk by Diane West and Lisa Marasco
Almost every mother struggles with her supply at some time and this book provides many great ideas to help increase it. I especially like it for its discussion of mammary hypoplasia, a condition in which a woman doesn't have enough actual milk producing tissue in her breasts. I have had several patients very relieved to find confirmation of a physical reason for their low supply.
