The sixth volume of the massive History of Cartography Project, Cartography in the Twentieth Century, is now available. Edited by Mark Monmonier, it takes two physical volumes and nearly two thousand pages to cover mapmaking in the twentieth century—and lists for an eye-popping $500 (U.S.), though it’s a bit cheaper on Amazon.

Volumes one through three are available for free download. Volumes four and five, covering the European Enlightenment and the nineteenth century, respectively, are still in development.

Previously: History of Cartography Project Co-Founder Dies.