My mother's cousin was a translator/photographer at the liberation of Bergen-Belsen and a few others. His negatives were SuperXX Pan if I remember correctly. You'll need some really cold tone paper - glossy to get the "look". Most negs were really cooked back then, so be ready for a lot of contrast and density. Anyway, if it's Kodak film don't worry about hurting it. If it is really curled you may have to wash and treat it. Just don't squeegee. It is usually easier to look up and make stuff like anti-curl than track it down, though Edwal might still make it.
I'll ask my dad what museums near you would want prints or to take care of it, should it need a home.

Have an interesting time with it, can't say it's fun, but it is fascinating in a creepy way. David