"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. This issue focuses on the organization's 25 years of working with infants, toddlers, and families. The articles are as follows: (1) "Hope Is a Baby" (Jeree Pawl), on themes of continuity and change related to the well-being and development of infants and toddlers; (2) "Infant and Early Childhood Mental Health: A Comprehensive Developmental Approach to Assessment and Intervention" (Stanley I. Greenspan and Serena Wieder); (3) "A Quarter-Century of the Transactional Model: How Have Things Changed?" (Arnold J. Smeroff and Michael J. MacKenzie); (4) "Thirty Years in Infant Mental Health" (Robert J. Harmon); (5) "Infant-Toddler Child Care in the United States: Where Has It Been? Where Is It Now? Where Is It Going?" (J. Ronald Lally); (6) "Preparing Infant-Family Practitioners: A Work in Progress" (Linda Eggbeer, Tammy Mann, and Linda Gilkerson); (7) "A View of Early Childhood Development" (Irving B. Harris); (8) "The Idea behind IDEA: Creating, Shaping, and Refining Early Intervention Legislation" (Carol Berman and Cindy Oser); and (9) "The Promise of Parents as Advocates" (Bernice Weissbourd and Joan Lombardi). Regular departments of the bulletin list Zero to Three publications, videotapes and on-line resources, and announcements about Zero to Three staff. (HTH)