Discover an Old Map
When was the last time you tried to refold a road map and stuff it in your glove box? April 5 is National Read a Road Map Day. The site Old Maps Online aggregates thousands of (believe it or not) old maps and lets you search geographically and by time period. And the David Rumsey Map Collection site (one of the major contributors to Old Maps Online) lets you overlay an old map over present day.