Sterner Stuff's Vintage Recreations are based on ad posters of the 1890's to 1930's. Bold, colorful, strong graphics, many by unknown commercial artists. This one, a WPA poster for Zion National Park by C. Don Powell. He did a number of posters for national parks. The scan of this old poster had to be edited for some tearing, creases, blotches, etc. In this case, the text was replaced, as it was too muddy in the original. Typeface is pretty close, the color is not.
Eye on Mt. Zion.