The relation between preschoolers' phonological awareness and the frequency and quality of parents' book-reading and reminiscing practices were examined in 54 low-income and ethnically diverse families. Children's phonological awareness was assessed at the beginning and end of preschool. Mothers reported the frequency with which they read books and reminisced with their children at the beginning of preschool using a questionnaire. They were also videotaped while reading a book and talking about a past event with their preschoolers. The quality of book-reading and reminiscing practices was measured via these videotapes by the number of open-ended questions mothers asked to extend the reading or conversation. Children's receptive and expressive vocabulary skills were assessed at the beginning of preschool as a control variable. Quality of reminiscing, but not book-reading practices, predicted preschoolers' phonological awareness skills at the end of preschool, even after controlling for beginning-of-preschool phonological and vocabulary skills and demographic variables. Reported frequency of book-reading and reminiscing practices bore no relation to phonological awareness skills. The link between quality of reminiscing practices and phonological awareness deserves further exploration, but might be explained by indirect links with other linguistic and cognitive skills. (Contains 2 tables and 1 note.)