Wow, you found some cool stuff, Susan. i think my favorites are the yellow casseroles (love those handles!) and the barbed wire sampler on the Maine cutout.
I think those ceramic masks aren't as uncommon as we think. I remember when a ceramics student friend of mine had to find a friend willing to have it done to her. She had to breathe through straws in her nostrils while the clay dried. And I doubt that anyone with claustophobia could bear it. But still, I think in ceramics circles, at least at one time, it wasn't infrequently practiced.