Byers Branch - John "Thunderbird Man" Emhoolah Jr. Branch Library serves 711,500 residents in the city of Denver and it is part of the Denver Public Library System. The library system maintains 1.3 million volumes and circulates 9 million items per year. John "Thunderbird Man" Emhoolah Jr. Branch Library offers books, audiobooks, e-books, movies, a curbside pickup service, a community room, public Wi-Fi, public computers, copying, printing, scanning, and faxing services.