Why was James Butler 'Wild Bill' Hickok killed in the gold camp of Deadwood Gulch on August 2, 1876? Author and hobby historian David A. Soma notes that five killings took place at the camp on those first three days of August. Hickok was just one of them. Revisiting the murders, Soma recreates this debate-riddled period in the American Old West in his new novel, The Yellow Doll: Deadwood, Hickok & Opium.