Here are links to some more sites. German Helmet .com (info on helmets, helmets for sale) GERMAN HELMETS inc (helmets for sale as well as spare parts) German steel helmet (manufacturers codes, photos, info on various models) The Collector's Guild (helmets for sale, photos) The link below is for a website that contains info on helmets from various nations. HELMETS HELMET COLLECTION HELMET COLLECTORS WEBSITES BOOKS GREG PICKERSGILL'S HELMET COLLECTION