Note that they can be quite old (USGS rev. 2001). They also don't have a lot of detail - I was looking at the section of Appalachian trail I hiked and it would

Note that they can be quite old (USGS rev. 2001). They also don't have a lot of detail - I was looking at the section of Appalachian trail I hiked and it would it quite difficult to use these maps even though they are nominally larger scale than the map I've used.