John Leopold Brodie (1873-1945) - Mark 1 steel helmet
U.S. officer's campaign hat, World War I] - The Portal to Texas History
The M1 Helmet: The Soldier's helmet | Article | The United States Army
French Adrian Helmet | National Museum of African American History and Culture
British WWI Officer Service Dress Peaked Cap- Size US 7 1/4 (58cm)
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 Australian Imperial Force (AIF) headwear 1914-1918 | Australian War Memorial
WWI U.S. Army Officer's Visor Hat or Cap | eBay
Pickelhaube - Wikipedia
US WW1 M1917 Brodie Helmet Doughboy Helmet 82nd Airborne Hand Aged - Walmart.com
Combat helmet from World War I used by the 93rd Infantry Division | National Museum of African American History and Culture
Belgian steel helmet | NZHistory, New Zealand history online
Bashford Dean and Helmet Design During World War I | The Metropolitan Museum of Art
World War I | American Institute of Physics
British WW1 Wool Trench Caps - Etsy
Eleven Artifacts of Heroism from America's Wars | At the Smithsonian| Smithsonian Magazine
National Museum of the Marine Corps - Artifact Highlight - WWI 2d Division Helmet circa 1918 This M1917 helmet belonged to Marine Arthur E. Lyng. Lyng was a Navy Cross and Distinguished