Bashford Dean and Helmet Design During World War I | The Metropolitan Museum of Art
Belgian steel helmet | NZHistory, New Zealand history online
The M1 Helmet: The Soldier's helmet | Article | The United States Army
Brodie Helmet / Helmet, steel, Mark I (World War I) - YouTube
Amazon.com: German WWI M1910 Officer Visor Cap- Size 7.25 (58cm): Collectibles: Clothing, Shoes & Jewelry
Pickelhaube - Wikipedia
How the Military Helmet Evolved From a Hazard to a Bullet Shield | At the Smithsonian| Smithsonian Magazine
The Evolution of the Hard Hat - The New York Times
U.S. Army officer's visor hat, World War I] - The Portal to Texas History
Lafayette Flying Corps Dress Cap > National Museum of the United States Air Force™ > Display
Brodie helmet - Wikipedia
Amazon.com: warreplica WW1 British Trench Cap - Reproduction 56: Clothing, Shoes & Jewelry
German WWI M1907 Feldmützen Cap – International Military Antiques
Comparing WW1 Helmet Designs I OUT OF THE TRENCHES - YouTube
Uniforms and Personal Gear - Helmet | Canada and the First World War
German Prussian M1907 FIELD GREY CAP Kratzchen - All Sizes - WW1 Repro Army Hat | eBay
Antiques Roadshow | Appraisal: WWI Imperial German Spiked Helmet | Season 15 | Episode 9 | PBS
WORLD WAR I TREASURES IN THE STOREROOM
The Brodie Helmet | National Army Museum, London
World War One Doughboy Helmet] - UNT Digital Library
W. H. Mullins Co. | American Helmet Model No. 7, Sentinel's Helmet | American, Salem, Ohio | The Metropolitan Museum of Art
U.S. officer's campaign hat, World War I] - The Portal to Texas History
WWI U.S. Army Protective Helmet Used by American Rocket Society | National Air and Space Museum
Military helmets - an introduction | Australian War Memorial
