New book provides first comprehensive reckoning of economic value of US NPs and USNPS programs

A new book, "Valuing US National Parks and Programs: America's Best Investment," provides the the first comprehensive reckoning of the economic value of the US national park system (nearly 420 parks) and the other programs run by USNPS. https://www.routledge.com/Valuing-US-National-Parks-and-Programs-Americas-Best-Investment/Bilmes-Loomis/p/book/9781138483125