This commentary applauds the authors of the monograph, The Mother-Child Attachment Partnership in Early Childhood: Secure Base Behavioral and Representational Processes, for their thorough and elegant exploration of the development of attachment working models in the preschool years in relation to maternal sensitivity and attachment representations, mother-child co-constructions of attachment-relevant stories, and children's own secure base behavior. These findings are set against a backdrop of children's memory development, with the recommendation that future research delves even younger to explore the development of attachment working models in children under 3 years. A second recommendation is to continue the work with older children, with a particular focus on the conversations they are having with caregivers about actual attachment-related experiences. This new research poses challenges, especially with at-risk samples. Fortunately, the stage is now set for attachment and memory researchers to come together to continue to map the development of attachment working models.