The only maps I know of are the water proof set, 3 of them printed front and back, that come with the orange guide book, Chuck Dillon.
Then there are large maps, 2 of them printed front and back, which are not water proof but larger with more detail. Those come from the STS trail club. They're not high quality, ie tear at folded seams with use, I tape them with clear tape on the seams and then carry them in a zip lock bag.
Bye the way if you have not already been there the clubs web site is: