Hi C. C.:
Most likely you will have to purchase what you're looking for, as those who compile the maps intend to be compensated for their efforts.
But here are some additional resources:
The biggest name in maps,
Rand McNally, sells Road Atlases for anywhere from $4--$50 at a million places online or off. Some show counties, some don't (as you may already know). You should go to a bookstore and put your hands on a couple.
This one'smore exotic than you want, I'm guessing.
Here's some more.
You might also try
here and see if they have what you're looking for (you need Adobe Acrobat to view the maps).
These maps look good (and are expensive also).
Starting to get the picture? They're probably not going to give you exactly what you want without some jack.
Good luck, and happy hunting.