Therese O'Malley, Ph.D., is associate dean at the Center for Advanced Study in the Visual Arts at the National Gallery of Art in Washington, D.C. She oversees the Center's publications and special meetings programs. Her scholarly publications have focused on the history of landscape architecture and garden design, primarily in the eighteenth and nineteenth centuries, concentrating on the transatlantic exchange of plants, ideas, and people. Her recent publications include a reference work entitled Keywords in American LandscapeDesign (New Haven: Yale University Press, 2010), The Art of Natural History: Illustrated Treatises and Botanical Paintings, 1400–1850, co-edited with Amy R. W. Meyers (Washington, D.C.: National Gallery of Art, 2010), and several articles on aspects of the early profession of landscape design and the history of botanic gardens. She is the former president of the Society of Architectural Historians, a member of the editorial boards of the University of Pennsylvania Press Landscape Studies series, and the international quarterly Studies in the History of Gardens & Designed Landscapes. She is founding board member of the Foundation for Landscape Studies, and board member of the Mount Vernon Place Conservancy, Baltimore. She currently serves as an advisor to the United States Ambassadors Fund for the State Department. Dr. O'Malley was chair of the Association of Research Institutes in the History of Art from 1994 to 2000 and a senior fellow in Landscape Studies at Dumbarton Oaks from 1989 to 1995. She lectures internationally and has been guest professor at Harvard, Princeton, University of Pennsylvania, and Temple University.

Kathryn R. Barush received a Ph.D. from the University of Oxford in 2012 and is currently a postdoctoral research associate at the Center for Advanced Study in the Visual Arts (CASVA) at the National Gallery of Art in Washington, D.C. Barush's work focuses on the art and material culture of religious pilgrimage. Her dissertation, which she is currently preparing for publication, examined the intersections of the concept of pilgrimage and the visual imagination in the context of early to mid-nineteenth-century Britain. Barush has presented aspects of her research at the College of William and Mary Institute for Pilgrimage Studies, the University of California, Berkeley, the University of Oxford, and the National Gallery of Art. In addition, she has worked as a curatorial assistant at the Yale University Center for British Art and interned at the Albright-Knox Art Gallery. Barush is presently a research affiliate for the Yale University Material and Visual Cultures of Religion project directed by Sally Promey. Her research has benefitted from the support of a Thomas J. Watson 12-month research fellowship and a 3-year Leverhulme Research Studentship.