Primarily twentieth century onwards. Collection focus is not limited to recent imprints; in fact, there is an ongoing effort, working with Classical Studies faculty, to identify and acquire series of primary source materials and secondary studies published since the later nineteenth century, filling in gaps to develop the research collection. Out-of-print materials may be sought as part of this process, as well as to replace lost materials considered significant for the collection.
Primary chronological focus ranges from the prehistoric period through 500 CE.