Adult learners are taking advantage of the availability and convenience of online education. Mature learners in online higher education classrooms bring a wealth of experience filtered through cultural, generational, and socioeconomical differences. The purpose of this research was to explore community building in an online graduate course by tapping learners' prior experience using an autobiographical memory exercise. The authors found that building social presence through course design contributed to increased communication and learning and encouraged an active and engaged online learning community. Recommendations for improving online learning communities provide educators with ideas for practice.