I collect ephemera myself and have a nice selection in my Etsy shop, Reveriefrance. Here is one example that I just got in. I have many more than I'm working to get photographed and uploaded to share with you.
The one I have here is from 1960. It is a French school poster that was used in France for education purposes. A vintage one in good shape is hard to come by as many were heavily used in the classroom on a daily basis. The posters were painted by well known artists. They are double sided, so there are actually two posters in one.
The one I am posting first, was done by two artists; G. Bonnatti and G. Michel. On one side, it has a French Seaport. On the other side, it has the construction of a house. These posters are huge! They are 39" by 25", and a photo on your computer doesn't really do them justice. Growing up in America, I don't recall having such magnificent posters at school.
Some of these posters are quite rare. In searching, I was hard pressed to find the same one elsewhere. Sure, there may be other school posters, but not this one and not of this quality. The ones I have in are in mint condition. They were in the school wharehouse and never were ued in the classroom. I received them in the same container that they were originally shipped to the school. I feel fortunate discovering these treasures. I hope you will enjoy them as much as I do.