He has published about Spanish and English exploration literature from the sixteenth through the early eighteenth centuries, with a particular focus on what is now the southeastern United States, and edited with Charles R. Ewen Searching for the Roanoke Colonies: An Interdisciplinary Collection. He and Ewen are currently working on a book about the 1585 Roanoke “Lost Colony” in academic and popular culture, especially the methodological issues surrounding the various hypotheses about what happened to the colonists.