First Lieutenant Jacob A. Field of Company K, 12th Maine Infantry Regiment in uniform and red officer's sash with sword] | Library of Congress
The Armies of Bismarck's Wars: The Army of Prussia—History, Uniforms, Weapons & Equipment, 1860–67 (English Edition) eBook : Powell, Bruce Basset: Amazon.es: Tienda Kindle
From Prussia with Love: The Origins of the Modern Profession of Arms - Modern War Institute