To avoid the high data costs and relative geographical ignorance that might accrue from prolonged use of Google Maps, I picked up a National Geographic Road Atlas for just under $20.00. The maps are not as beautiful or inviting as the OS Maps from our Coast-to-Coast trip across England, but they serve their purpose and are easily navigable. This handy atlas includes a full-page (sometimes two or three) dedicated to each state, which allows for a relatively high level of detail. Beyond the state maps, it also includes maps of major cities, national parks, and other worthwhile natural and cultural attractions. All in all, it makes for an inviting and accessible cartographic experience. It has been my copilot since day one, riding shotgun the entire way.
Via Bill Cronon.