Subway map geeks rejoice:
Transit Maps of the World is the first and only comprehensive collection of historic and current maps of every rapid-transit system on earth. Using glorious, colorful graphics, Mark Ovenden traces the history of mass transit-including rare and historic maps, diagrams, and photographs, some available for the first time since their original publication. Transit Maps is the graphic designer's new bible, the transport enthusiast's dream collection, and a coffee-table essential for everyone who's ever traveled in a city.
Found out about this from Boing Boing, where Cory has a quick review.