"Zero to Three" is a single-focus bulletin of the National Center for Infants, Toddlers, and Families providing insight from multiple disciplines on the development of infants, toddlers, and their families. An outgrowth of the Head Start Forum on Infant Mental Health, this issue focuses on infant mental health and implications for Early Head Start programs. The articles are as follows: (1) "A Commitment to Supporting the Mental Health of Our Youngest Children" (Rachel Chazan-Cohen, Judith Jerald, and Deborah Roderick Stark); (2) "Towards a Definition of Infant Mental Health" (Charles H. Zeanah, Jr., and Paula Doyle Zeanah); (3) "A Developmental Psychiatrist Looks at Infant Mental Health Challenges for Early Head Start: Understanding Context and Overcoming Avoidance" (Robert N. Emde); (4) "Fathers as Facilitators of Infant Mental Health: Implications for Early Head Start" (Hiram E. Fitzgerald and Marcel Montanez); (5) "The Sociocultural Context of Infant Mental Health in African American Families" (Suzanne M. Randolph and Sally A. Koblinsky); (6) "Is Mom's Mind on Her Baby? Infant Mental Health in Early Head Start" (JoAnne E. Solchany and Kathryn E. Barnard); (7) "Mothers, Babies, and Depression: Questions and Answers" (Roseanne Clark and Emily Fenichel); (8) "Relationships for Learning: Early Head Start Infant Mental Health in Jackson, Michigan" (Deborah J. Weatherston); (9) "Infant Mental Health at Hope Street Is Everybody's Business" (Cecilia Samartin and others) [in English and Spanish]; and (10) "Organizational Environments that Support Mental Health" (Robert N. Emde, Judith Bertacchi, and Tammy L. Mann). Regular departments of the bulletin list Zero to Three publications, videotapes, and on-line resources, and announcements about Zero to Three staff. (HTH)