The single most important source for Second Temple Jewish exegetical traditions is the three commentaries series written by Philo of Alexandria. Wanting to understand Second Temple Judaism more fully, a group of scholars founded the Philo Institute in 1971 to explore those traditions. The following year they began publication of The Studia Philonica as a venue for their research; however, the significance of Philo's work soon captured the interest of a broader group of scholars and quickly opened the journal's pages up to all aspects of Philonic studies. Six issues were released from 1972-1980 containing twenty-five articles, annual bibliographies, and abstracts of notable publications. The list of contributors is a who's who in Philonic studies in the 1970s and 1980s. After a lapse of almost a decade, the journal was revived as the Studia Philonica Annual, which is devoted to furthering the study of Hellenistic Judaism, in particular the writings and thought of the Hellenistic-Jewish writer Philo of Alexandria (ca. 15 b.c.e. to ca. 50 c.e.). Each year the Annual publishes the most current Philonic scholarship along with an extensive bibliography that is maintained by David Runia.