Barbara S. Christen is an architectural historian who specializes in the history of Cass Gilbert’s architectural work and the history of campus and preservation planning. In recent years, she has served as technical advisor for the Society of College and University Planning (SCUP) Campus Heritage Discovery Project, examining the campus heritage projects funded between 2002 and 2007 by the Getty Foundation (www.campusheritage.org). She has also led the Council of Independent Colleges (CIC) Historic Campus Architecture Project, which created an inventory of historic campus architecture and landscape design regarding 2100 cultural heritage sites at nearly 400 campuses of independent colleges and universities across the United States (www.cic.edu/hcap). She received her Ph.D. in art and architectural history from the City University of New York Graduate Center.