This poster is making the rounds on Reddit today:
As you might have guessed, it’s not actually from the Smithsonian (though it should be), but checking the Reddit thread, the original source is a student art project by designer Jenny Burrows. You can find a blog post about it, including two more posters in the same style, here. Prints are available from DeviantArt, and I sincerely hope some teachers buy them because they are awesome.
I finally got around to requesting a Teddy Roosevelt biography from the Library because of this poster (although apparently he was shot before the speech, not during).
My wife really enjoyed reading The Three Roosevelts if you’re looking for a follow-up when you’re done.