How can you find what year your Iver Johnson 20 gauge was made?

Generally, you can't. If you can identify the model, you can determine the years in which it was manufactured, and sometimes narrow that down by variations in the model's specifications.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.