e03179 writes "A friend of mine stumbled across this site from the US Library of Congress. The website allows users to view maps that go all the way back to the 1500's (like this one of America in 1562). The maps have been converted to digital form (SID format - viewer available here) but are viewable in .GIF form in your browser. I was able to look up my hometown during 1871 and see the church in which I'm getting married. Who thought the LOC could be so 31337?"