The Smithsonian’s National Museum of American History has published Entertainment Nation: How Music, Television, Film, Sports, and Theater Shaped the United States, co-edited by Professor Kenneth Cohen and NMAH curator John Troutman. The book is an essential guide to the Smithsonian’s upcoming exhibition on the history of American commercial entertainment. It includes a history of entertainment memorabilia collecting, especially at the Smithsonian, as well as entries and essays that link pop culture artifacts to political and social history. A full description is included below.