In reply to newtonmore:
There is a guide for Devils Tower but I don't like it much.
https://www.rockandsnow.com/3515/Devil's-Tower-Guide/?gclid=Cj0KCQjwz9...
If you want the Tower and nearby areas - including Tensleep, Spearfish, Winds, Grand Teton etc etc the best idea is to download the Mountain Project app. You can then download the Wyoming and South Dakota areas and use offline. For the Tower at least it's almost as good as a printed guide.
El Matador is awesome if you can stand the leg pain!
Post edited at 18:39