An interesting post on an interesting site about ephemera, which is the perfect name for old paper too. Little Lord Fauntleroy.
It reminds me of when I worked in the Special Collections cataloguing department of JHU in Baltimore. It was my job to work in the Cage (and yes that is what they called it) to go through the old uncatalogued books and try and work out where they would go in the catalogue. I always felt it was hug privilege to open these books which no-one else had looked at for decades in some cases. I had to wear special white cotton gloves which were always completely dirty and dusty when I finished.
I also worked here: John Work Garrett Library where I really felt like I was an adventurer in paper. It's hard to describe the thrill of taking down a book and a leaf or something fell out. In one case it was a piece of velvet ribbon, which was just utterly charming.