In honor of National Pregnancy and Infant Loss Remembrance Day:
Death of a Dream: Miscarriage, Stillbirth, and Newborn Loss, by Donna and Rodger Ewy.
This is a great book, aimed primarily at caregivers - doctors, nurses, family members, etc. It has details - written in easy-to-understand language, though - about the medical causes of miscarriage and stillbirth, including genetic factors, placental abnormalities, and so forth. Gives clear suggestions for support people as to what to say and how to act. This book would be helpful for parents, but I would most recommend it to doulas and nurses.
A Woman Doctor's Guide to Miscarriage: Essential Facts and Up-To-The Minute Information on Coping With Pregnancy Loss and Trying Again, by Lynn Friedman, MD and Irene Daria.
Goes into a lot of detail on the causes and prevention of miscarriage, particularly recurring miscarriage, with smaller chapters on grief and trying again. Has a neat section at the back of women's stories.
Empty Cradle, Broken Heart: Surviving the Death of Your Baby by Deborah L. Davis.
Explores in detail the grief process and the emotions that parents may be going through. Focuses mostly on the emotional aspects with very little information about the physical process, and focuses primarily on stillbirth rather than miscarriage. Helpful for anyone, though.
Molly's Rosebush, by Janice Cohn and Gail Owens.
This is a really simply, touching book about miscarriage for children from the perspective of the older sister. It makes a great analogy that just as some seeds don't sprout, and some eggs don't hatch, some babies don't get to be born.