Tom R. Ryan, FASLA, is Principal of Ryan Associates, Landscape Architecture and Planning. He has more than thirty years of experience as a practicing landscape architect, and has taught in the landscape architecture departments at the University of Pennsylvania, SUNY College of Environmental Science and Forestry, and Harvard University Graduate School of Design.

Edward Allen, FAIA, has been a member of the faculties at Yale University and the Massachusetts Institute of Technology, and has frequently taught as a guest at other institutions across the United States over the past thirty years. He is also the best-selling coauthor of Fundamentals of Building Construction and The Architect's Studio Companion (both with Joseph Iano), Form and Forces (with Waclaw Zalewski), and Architectural Detailing (with Patrick Rand), all published by Wiley.

Patrick Rand, FAIA, is a Professor in the School of Architecture at North Carolina State University, where he teaches design studios, construction systems courses, and detailing seminars. He is coauthor of Architectural Detailing along with Edward Allen.