Rolf Diamant is a landscape architect, adjunct associate professor of historic preservation at the University of Vermont, and former superintendent of five national parks including Frederick Law Olmsted National Historic Site. He is coeditor and contributing author of A Thinking Person's Guide to America's National Parks (George Braziller, New York, 2016.) and regularly contributes to the journal Parks Stewardship Forum. In his spare time, Rolf has led small boat trips in kayaks and white-water rafts from Alaska's Brook Range to the coast of New England. Ethan Carr, FASLA, is professor of landscape architecture at the University of Massachusetts Amherst and an international authority on America's public landscapes. He is author of Wilderness by Design: Landscape Architecture and the National Park Service, Mission 66: Modernism and the National Park Dilemma, and The Greatest Beach: A History of Cape Cod National Seashore, lead editor of Public Nature: Scenery, History, and Park Design, and coeditor of Volume 8 of The Papers of Frederick Law Olmsted. Carr consults with landscape architecture firms developing plans and designs for historic parks of all types.