The Evolution of the Hard Hat - The New York Times
Bashford Dean and Helmet Design During World War I | The Metropolitan Museum of Art
Stahlhelm, German helmet - Musée de la Grande Guerre
The History of the Hard Hat | Innovation| Smithsonian Magazine
50th Aero Squadron M1917 Infantry Helmet > National Museum of the United States Air Force™ > Display
Pickelhaube - Wikipedia
Eleven Artifacts of Heroism from America's Wars | At the Smithsonian| Smithsonian Magazine
Bashford Dean and the Development of Helmets and Body Armor during World War I | Essay | The Metropolitan Museum of Art | Heilbrunn Timeline of Art History
The cause of World War One! Origins: Rap Battle | WW1 Uncut - BBC - YouTube
World War I 55th U.S. Engineers Painted Helmet | Antiques Roadshow | PBS
Prussian Cavalry Officer Helmet > National Museum of the United States Air Force™ > Display
Collections (Northwest Museum of Arts + Culture)
German Helmet - Cork City Council
Travels of a World War I Nurse – Circulating Now from the NLM Historical Collections
WWI Helmets Protect Against Shock Waves Just as Well as Modern Designs | Duke Pratt School of Engineering
RCIN 69443 - Helmet and sniper plate
5 Real-Life WWI Artifacts As Depicted In Netflix's "All Quiet on the Western Front" | National WWI Museum and Memorial
Combat helmet from World War I used by the 93rd Infantry Division | National Museum of African American History and Culture
The Australian Imperial Force (AIF) headwear 1914-1918 | Australian War Memorial
Were WWI 'Tinpot' Helmets Really Better at Preventing TBI? The Army Says No | Military.com
Steel Helmet, MK I Brodie pattern: British Army | Imperial War Museums
