That site is very good. Lots and lots of old maps. If you sign up for a user name they give you a $1 credit that will let you print one map of your choice. I did one of my area from the late 1800's on a transperancy and laid it on top of a scaled map of the same area from Google Earth. Really cool to see that some of the wooded areas here were in the exact same shape as they were over 100 years ago. The transperancy also lets me see where different homesteads were located on todays geography. I'm thinking about buying some more to do the same things for other areas.