Objective: This retrospective, cross-sectional study explored the hypothesis that multiple forms of child abuse and neglect (child multi-type maltreatment; CMM) would be associated with women's lower social support and higher stress in adulthood, and that this, in turn, would amplify their vulnerability to symptoms of depression and posttraumatic stress disorder (PTSD). Method: Participants were 100 women recruited from an inner-city gynecological treatment center for low-income women. Data were analyzed via structural equation modeling (SEM) with Lisrel 8.0. Results: CMM was directly predictive of decreased social support and increased stress in adulthood. CMM was also directly predictive of PTSD symptoms, but not depression symptoms in adulthood. Social support partially mediated the relationship between CMM and adult PTSD symptoms, and stress fully mediated the relationship between CMM and adult symptoms of depression. Conclusions: Findings support both direct and mediational effects of social resources on adult depression and PTSD symptoms in women with histories of CMM, suggesting that resources are key factors in psychological adjustment of CMM victims.