xkcd is a webcomic created by Randall Munroe, a former NASA roboticist turned cartoonist. He mines his scientific & geographic knowledge for his comics and always finds a funny (sometimes absurd, sometimes obscure) punchline. 

This exhibit focuses on comics that are cartography and geography themed, plus one about space and two poking fun at Geographic Information Systems practitioners. 

Full "Minnesota shouldn't be squishy." comic. 

More from xkcd.

No appointment is needed to view this exhibit.