Of course these days gender ID is such a fluid thing.
Case in point: In order to get my REALID that would allow me to fly, I had to provide my birth certificate, marriage license (I have been widowed for over 30 years,) SS card, and at least two letters addressed to my house.
But I didn't have to declare my sex. I could be male, female or non-binary depending on my mood at the moment. And no one would ask for proof of my sex, like they asked for proof of my marriage.
Next time the form asks for "sex" I'm going to put down, "not since the early '80s."
In all seriousness, the most strange items were an official biography of Mary Baker Eddy, and a ratty hymnal from my hometown Christian Science branch church when it was a (pre-church) "society." How did THAT get there? It was owned by good staunch Baptists for centuries (literally), no telling how those got there.
Plus old turn-of-the-20th Century books (moldy!) and various antiques. Anybody need a nice enamel bed pan?