Postpartum Dads Online This website, which is affiliated with Postpartum Support International (www.postpartum.net), includes information for new dads about postpartum depression.
Postpartum Men.com
Pacific Postpartum Support Society has information for partners and families and also hosts partner information nights.
PANDA is an Australian, not-for-profit, self-help organization for post and antenatal mood disorders. Their website offers accurate information including fact sheets for those caring for a woman with perinatal depression.
BC Partners for Mental Health and Addiction hosts a website Here To Help that provides facts sheets on supporting a family member with a mental illness as well as accurate information about mood disorders and mental illness.
The Family Support Institute is pleased to announce the launch of its new initiative, Support Worker Central, an online database designed to match individuals, families and agencies with support workers in their communities.

Books & Book Chapters:

The Postpartum Husband, Practical Solutions for Living With Postpartum Depression by Karen Kleiman (2001). XLibris.
Beyond the Blues: A Guide to Understanding and Treating Prenatal and Postpartum Depression by Shoshana Bennett & Pec Indman (2006) Moodswings Press: San Jose, CA (Chapter 4: Partners). Also available in Spanish.
Pregnancy Blues: What every woman needs to know about depression during pregnancy by Shaila Misri (2005). New York: Delacorte Press. (Ch. 12 “And What About Fathers?”)
And Baby Makes Three: The Six-Step Plan for Preserving Marital Intimacy and Rekindling Romance After Baby Arrives by John M Gottman and Julie Schwartz Gottman (2008) Crown Publishing Group.