W. H. Mullins Co. | American Helmet Model No. 7, Sentinel's Helmet | American, Salem, Ohio | The Metropolitan Museum of Art
Ford Motor Company | American Helmet Model No. 8 | American, Philadelphia | The Metropolitan Museum of Art
Military helmets - an introduction | Australian War Memorial
Amazon.com : Epic Militaria WW1 US M17 Helmet - American Military Army Steel Cotton Lined Reproduction (Medium (56/57 cm)), Green : Sports & Outdoors
Germany - Helmet
50th Aero Squadron M1917 Infantry Helmet > National Museum of the United States Air Force™ > Display
Amazon.com : Epic Militaria WW1 US M17 Helmet - American Military Army Steel Cotton Lined Reproduction (Medium (56/57 cm)), Green : Sports & Outdoors
5 Real-Life WWI Artifacts As Depicted In Netflix's "All Quiet on the Western Front" | National WWI Museum and Memorial
World War One Doughboy Helmet] - UNT Digital Library
Bashford Dean and Helmet Design During World War I | The Metropolitan Museum of Art
WWI U.S. Army Protective Helmet Used by American Rocket Society | National Air and Space Museum
Brodie helmet - Wikipedia
WW1 helmet with bullet hole stolen in break-in - BBC News
Military helmets - an introduction | Australian War Memorial
Helmet worn by Peter L. Robinson, Sr. during World War I | National Museum of African American History and Culture
Combat helmet from World War I used by the 93rd Infantry Division | National Museum of African American History and Culture
Were WWI 'Tinpot' Helmets Really Better at Preventing TBI? The Army Says No | Military.com
Artifact of the Week: Battle-damaged Helmet | NC DNCR
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