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
WWI gas mask | Bullock Texas State History Museum
Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques
Amazon.com: WWI US Marines Gas Mask 1918 Poster Print by Science Source (36 x 24): Posters & Prints
Echoing history, Army Reserve Soldiers play baseball in gas masks > U.S. Army Reserve > News
US Army Corrected English Model Gas Mask Respirator and Bag | What Price Glory
WWI Gas mask and helmet Stock Photo - Alamy
WWI Gas Mask Bag 1918 Authentic - Etsy
Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques
American Soldiers Wearing Gas Masks by Bettmann
Soldier of WW1 in a gas mask hold a rifle, Art Print | Barewalls Posters & Prints | bwc3063950
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
Wwi: Gas Mask, 1918 Photograph by Granger - Pixels
File:U.S. Marines in their gas masks during a gas mask drill, France, WWI (32916863386).jpg - Wikimedia Commons
Amazon.com: WWI German Gas Mask Poster Print by Science Source (18 x 24): Posters & Prints
WW1 US Gas Mask with Bag -Named Fred J F | VDG Militaria
WWI US M1917 US ARMY SBR GAS MASK & CARRY BAG | eBay
A Local Inventor Helped Supply WW1 Gas Masks - - The Adirondack Almanack
1915 Gas Mask Set from Hessen Antique
French soldiers in Tampon TN Gas Masks | Farbound.Net
WWI gas mask on an American soldier. | Französin
Imperial German WWI Gas Mask – International Military Antiques
