Mt Whitney Zone Forums General Discussion Recommended Topo map for Mountaineers Route?

Hi: Hoping to get a permit this year. I did the approach over 20 years ago on my way to a climb. At the time I had a map and a brief description of the approach from the Fifty Classic Climbs book. I still have the book, but no longer have the map. While there are many descriptions about the approach on the net now, I wouldn't go without a good map.

Any recommendations of a good map, and where to purchase it?

Thanks!