Explore the world with National Geographic's TOPO Maps, Back Roads Explorer. This vintage collection includes 18 CDs covering all 50 states, with detailed maps and topography information. The CDs are compatible with Mac OS 9.0 or above, or OS 10.2 or above, and Windows 95 98, 2000, NT, ME or XP. The language is in English, and the minimum hard drive space, RAM, and processor speed are listed in the description. This software is perfect for educators, language enthusiasts, and anyone who loves exploring the world. Get your hands on this rare National Geographic collection today.