French First World War helmet better protection than modern one: U.S. study | CTV News
How a WWI war helmet outperformed modern gear in a new study | PBS NewsHour
A World War I Vintage Helmet Bests A Modern Brain Bucket : NPR
WWI helmets protect against shock waves just | EurekAlert!
French Adrian Helmet | National Museum of African American History and Culture
John Leopold Brodie (1873-1945) - Mark 1 steel helmet
Combat helmet from World War I used by the 93rd Infantry Division | National Museum of African American History and Culture
Do WWI helmets protect against shock waves as well as modern designs? | The Western Front Association
Stahlhelm, German helmet - Musée de la Grande Guerre
Steel Helmet, Brodie "War Office" pattern: British Army | Imperial War Museums
The M1 Helmet: The Soldier's helmet | Article | The United States Army
Steel Helmet, MK I Brodie pattern: British Army | Imperial War Museums
German Helmet - Cork City Council
The M1 Helmet: The Soldier's helmet | Article | The United States Army
WWI Helmets Protect Against Shock Waves Just as Well as Modern Designs | Duke Pratt School of Engineering
World War I 55th U.S. Engineers Painted Helmet | Antiques Roadshow | PBS
The Brodie Helmet | National Army Museum, London
German Helmet - Cork City Council
Belgian steel helmet | NZHistory, New Zealand history online
WW I helmet provides better overhead blast protection than modern version, study shows | CBC Radio
Adrian helmet - Wikipedia
Germany - Helmet
W. H. Mullins Co. | American Helmet Model No. 7, Sentinel's Helmet | American, Salem, Ohio | The Metropolitan Museum of Art
