Book excerpt: In 1930, four decades after the surrender of Geronimo, anthropologist Grenville Goodwin headed south in search of a rumored band of "wild" Apaches in the Sierra Madre. Goodwin's journals chronicling his epic search have been edited and annotated by his son, Neil, who was born three months before his father's tragic death at the age of thirty-three. Neil Goodwin uses the journals to engage in a dialogue with the father he never knew.