The Atlas of Tumor Pathology was first conceived at a cancer research meeting held in St. Louis in September 1947 as an attempt to standardize the nomenclature of neoplastic diseases. That idea was the beginning of what became the AFIP Fascicles. Since 2011, when the Armed Forces Institute of Pathology was modified to the Joint Pathology Center and only available to government and military colleagues, ARP has remained the home for the fascicles. We continue the work of those who first conceived of these volumes by publishing outstanding references and offering them at modest prices. We constantly seek ways to make the fascicles more valuable to the pathology community. For example, as part of our continuing efforts to make the fascicles more valuable to the pathology community, each purchase starting with Series V includes both the hardcover and epub.