When I went to Great Smoky Mountain National Park for the first time, I bought the Falcon Guide in Asheville. It made the experience so much easier.
Remembering that, I was very happy to find the Falcon Guide to the Blue Ridge Parkway which, although the parkway is almost in my backyard, covers so much ground that I don't know it well.
I love how the text is broken up by geographic area, as this makes it very easy to look at where I will be and match my location with hikes in the area. I also love that the authors highlight cultural as well as natural landmarks.
I only wish the Falcon Guides would be printed in color! They have spectacular photos, and I wish I could at least get a hint of what they actually look like!