Ephemera like this is always worth picking up if the price is right IMO. Just be careful though or you'll end up like me with about 20 box files full and a storage problem
There is more that I haven't posted, it all started with a British army AFV ID book that my uncle gave me when I was a young un. I keep adding bits and pieces when I see them and they take my fancy. There is quite a lot of it but it takes up less space than some of the other stuff I have. I spotted a civil defence gas identification pamphlet as well today and will be making enquiries about it's price with a view to purchase as soon as I am able.