Zane Grey (2015). “ZANE GREY Ultimate Collection: Historical Novels, Western Classics, Adventure Tales & Baseball Stories (60+ Titles in One Volume): Riders of the Purple Sage, The Border Legion, Wildfire, Desert Gold, Betty Zane, The Last Trail, The Heritage of the Desert, The Lone Star Ranger, Arizona Clan, To the Last Man, The Day of the Beast…”, p.7307, e-artnow