JPEO for Chemical, Biological, Radiological and Nuclear Defense - #ThrowbackThursday: First U.S.-Produced Gas Mask (L), First Improved Gas Mask for Field Use (C), and Primary World War I Gas Mask for U.S.
![AEF Gasmasks & Respirators 1917 to 1919 - (1917-1919) WORLD WAR ONE, RUSSIAN INTERVENTION - U.S. Militaria Forum AEF Gasmasks & Respirators 1917 to 1919 - (1917-1919) WORLD WAR ONE, RUSSIAN INTERVENTION - U.S. Militaria Forum](https://www.usmilitariaforum.com/forums/uploads/monthly_02_2015/post-5143-0-73783100-1425036602.jpg)
AEF Gasmasks & Respirators 1917 to 1919 - (1917-1919) WORLD WAR ONE, RUSSIAN INTERVENTION - U.S. Militaria Forum
Small Box Respirator : Lieutenant E C Dockar, 43 Battalion, Canadian Expeditionary Force | Australian War Memorial
![British Small Box Respirator with Haversack | Lest We Forget | World War I Exhibit | Pritzker Military Museum & Library | Chicago British Small Box Respirator with Haversack | Lest We Forget | World War I Exhibit | Pritzker Military Museum & Library | Chicago](https://www.pritzkermilitary.org/sites/default/files/images/exhibit/p16630coll4790-1000.jpeg)
British Small Box Respirator with Haversack | Lest We Forget | World War I Exhibit | Pritzker Military Museum & Library | Chicago
![Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques](https://cdn.shopify.com/s/files/1/1524/1342/products/ONSV3607__12.jpg?v=1621535256)
Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques
![Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques Original U.S. WWI M1917 SBR Gas Mask with Carry Bag, Instructions, and – International Military Antiques](https://cdn.shopify.com/s/files/1/1524/1342/products/ONSV3608__08.jpg?v=1617307373)