[ The library does, at least, have windows. It's more for the ravens than the readers, Merrill supposes, but it lets in fresh air and light. It also gives Barkley something to try and jump up to look out of, which he promptly abandons as soon as Katniss is sitting and he thinks he may be able to con some attention out of her. ]

Not much, but that's hardly surprising. Similar looking objects in old drawings, but it's hard to tell how much is just style and how much is accurate. They weren't really interested in preserving our history past what they could use.