WWI U.S. Army Officer's Visor Hat or Cap | eBay
The Australian Imperial Force (AIF) headwear 1914-1918 | Australian War Memorial
Pickelhaube - Wikipedia
Eleven Artifacts of Heroism from America's Wars | At the Smithsonian| Smithsonian Magazine
World War I | American Institute of Physics
R25A-23 WW1 Imperial Russian Army Officers Visor Hat Green Wool Size 7 1/8 | eBay
German Helmet - Cork City Council
Combat helmet from World War I used by the 93rd Infantry Division | National Museum of African American History and Culture
WWI U.S. Army Protective Helmet Used by American Rocket Society | National Air and Space Museum
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
Adrian helmet - Wikipedia
Brodie helmet - Wikipedia
British WW1 Wool Trench Caps - Etsy
World War I 55th U.S. Engineers Painted Helmet | Antiques Roadshow | PBS
Hard Hat Turns 101; Impact on Industrial Safety Never Gets Old - World War I Centennial
Amazon.com: warreplica WW1 Canadian/British Trench Cap and Badge - Reproduction (Size 56 CMS) Khaki: Clothing, Shoes & Jewelry
Stahlhelm M16 - WW1 German steel helmet 1 (55-56) 74,75 € | Nestof.pl
U.S. officer's campaign hat, World War I] - The Portal to Texas History
The Evolution of the Hard Hat - The New York Times
Amazon.com: British WWI Officer Service Dress Peaked Cap- Size US 7 (56cm): Clothing, Shoes & Jewelry
The Brodie Helmet | National Army Museum, London
