I went back and looked at the page, and did a couple of screen captures.
I also went and looked at the original sources (both the Arpaio Posse's official video, and the 1968 manual on the site of the National Bureau of Economic Research). And the site does show correct images.
Here's the image from the Arpaio Posse's official video:
And here's the image from the original 1968 manual hosted at the NBER:
I can see where it would be easy to get confused from that graphic, but it is in fact the document on the National Bureau of Economic Research site that is clearer and more detailed, and it does appear to be the original.