The Chessmen of Mars, by Edgar Rice Burroughs - Boardwalk Empire Season 4 Episode 2 - "Resignation"
Boardwalk Empire, Rice Burroughs, Edgar Rice, Burroughs Boardwalk
William Wilson, by Edgar Allen Poe - Boardwalk Empire Season 4 Episode 7 - "William Wilson"
Boardwalk Empire, Poe Boardwalk, Empire Books, Edgar Allen Poe
Ragged Dick, Or, Street Life in New York with the Boot-blacks, by Horatio Alger - Boardwalk Empire Season 4 Episode 8 - "The Old Ship of Zion". This book was also featured prominently in Season 3 Episode 11, “Two Imposters”