can you tell me about the poster "childrens crusade for children" I have an original

Your question is not very specific. What do you need to know? I did google it. There is a lot of information on the web. However, calling the museum and having someone knowledgeable to speak with may be a good start. Good luck.

You'd probably want to call them and see if you can bring it in for them to view.

Taking it to them would be your best bet