Wie Helfe Ich? Original First Aid Book with Poison Gas Leaflet pre-WWII It is about the only

It is about the only instance in the entire war they used the same exact thing

UV protective lenses

I believe this to be historically significant because it indicates the use of

It is in overall good condition with some general wear

Wie Helfe Ich? Original First Aid Book with Poison Gas Leaflet pre-WWII It is about the onlyOriginal "How do I Help?" first aid book for everyone. It is in decent condition with a tear on the spine and light wear. It has a few illustrations but is mostly text. It is undated, but it has advertisements with prices in Reichsmarks. It also comes with a Merkblatt leaflet on poison gas. There is also a typed paper detailing different types of gases. It measures about 6 5 8" by 4 5 8".