From the website (accessed 2015-12-17):
The Duke Data Bank of Documentary Papyri (DDBDP) is an electronic corpus of published Greek and Latin documents written on papyrus, ostraca, or wooden tablets. The project began in in 1982 as a collaboration between Professors William H. Willis and John F. Oates, both of Duke University, and Dr. David R. Packard. The David and Lucile Packard Foundation and the Packard Humanities Institute (PHI) funded the project from its inception through 1996; the National Endowment for the Humanities (NEH) provided additional financial support. Duke University Libraries in general and the Special Collections Library (now David M. Rubenstein Rare Book and Manuscript Library) in particular have offered invaluable material support since the project’s birth, and continue to do so.