Robert M. Durling is Professor Emeritus of English and Italian Literature at the University of California, Santa Cruz.
Ronald L. Martinez is Professor of Italian at the University of Minnesota. Their works together include Dante's Inferno and Time and the Crystal: Studies in Dante's "Rime petrose."
Robert Turner has been a professional illustrator for more than 20 years. He works at the Museum of New Mexico in Santa Fe.

The second volume of Oxford's new "Divine Comedy" presents the Italian text of the "Purgatorio" and, on facing pages, a new prose translation that is unprecedented in its accuracy, eloquence, and closeness to Dante's syntax.