Permeable gear with the M3-IXA1-IVA1 Diaphragm gas mask. Permeable gear was used as early as WW1 and remained standard into the 1950s. My specific setup uses the second pattern “special” HBT uniform
File:U.S. Marines in their gas masks during a gas mask drill, France, WWI (32916863386).jpg - Wikimedia Commons
Echoing history, Army Reserve Soldiers play baseball in gas masks > U.S. Army Reserve > News-Display
A Local Inventor Helped Supply WW1 Gas Masks - - The Adirondack Almanack
Echoing history, Army Reserve Soldiers play baseball in gas masks > U.S. Army Reserve > News
Image of WWI: GAS MASK, 1918. - Albert S. Pollard Of The US Army Corps Of Engineers, Wearing The Type Of Gas Mask Used By The English. Photograph, 1918. From Granger - Historical Picture Archive
Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques
World war i gas mask american hi-res stock photography and images - Alamy
1915 Gas Mask Set from Hessen Antique
M2 gas mask - Wikipedia
WWI US ARMY HELMET & GAS MASK - C58329 - Simpson Ltd
WWI Gas Mask Bag 1918 Authentic - Etsy
Amazon.com: WWI US Marines Gas Mask 1918 Poster Print by Science Source (36 x 24): Posters & Prints
WW1 US Gas Mask with Bag -Named Fred J F | VDG Militaria
American Small Box Respirator | Gas Mask and Respirator Wiki | Fandom
Imperial German WWI Gas Mask – International Military Antiques
WW1 Photos & Info. - U.S. soldier wearing a gas-mask posing for a photograph with an M1917 Revolver and a bolo knife, 1918. . The M1917 Revolver was a U.S. revolver produced
WWI gas mask | Bullock Texas State History Museum
Wwi: Gas Mask, 1918 Photograph by Granger - Pixels
AEF Gasmasks & Respirators 1917 to 1919 - (1917-1919) WORLD WAR ONE, RUSSIAN INTERVENTION - U.S. Militaria Forum
US Infantry in Gas Masks (1918) - ICM Holding
From The National Archives: How Gas Masks Were Built During World War I - InsideHook
American Soldiers Wearing Gas Masks by Bettmann
WWI Small Box Respirator (Gas Mask) - American Militaria Reference
