Home › Fargo › Valley of Skulls V Valley of Skulls by John Benteen · 1970 · Book 6 of Fargo Buy on Amazon As an Amazon Associate we earn from qualifying purchases. About “Valley of Skulls” Valley of Skulls is a 1970 book by John Benteen. It is book 6 of the series Fargo. Book details First published 1970 ← Massacre River All Fargo books in order Wolf's Head →