Good Lord, get a hold of the Smithsonian.
I think the artifacts you are describing are rare and they would LOVE to have them.
I am sure they will assign historians to help you determine exactly what each piece is.
Smithsonian has no interest in such things. The WWII museum might, but anything with a swastika on it will just go into a drawer and never get public display. Some local historical societies will display such things if they come from an estate of a local resident, but if it has value, someone will likely pocket it and sell it.