Most of this is at the very least, mild exaggeration. Wingaersheek is not even Native American in origin. The formation is likely a result of quarrying and the postcard view is 'tipped' at an angle to it's realistic view.
Here is a comparison of how "The chief" looks in more modern days. The modern day photo has been rotated to approximate what is shown in the old postcard image
And a detail of the modern day 'profile' features.
