This article is a 20-year evaluation of the Parent-Child Home Program (PCHP) of Child and Family Services in Western Manitoba. Following Levenstein's (1979, 1988) approach, home visitors model parent-child interchanges using books and toys to enhance children's cognitive development through appropriate parenting behaviors. The evaluation provides a profile of PCHP families (N = 185) and performance outcomes. Findings show impressive gains in cognitive competence and parenting behaviors. Recommendations are given for program development and future research.