I’m a sucker for road maps, so I think I’ve saved the best of Plep’s three links to various Osher Map Library pages for last: an exhibition of early highway maps, called Road Maps: The American Way, that took place in 2001. It’s not so much a collection of maps as a collection of the physical objects: there are a lot more images of map covers than the actual maps. But the exhibition is fascinating for giving highway maps a history, and included some neat facts about their origins that I hadn’t known before.