The image I posted came from page 89 of the PDF file, not the book. The solid black portion is actually part of the illustration, not a frame added later, so it's unlikely that they went in later and added random parts of a picture.
I'm not sure why you still think uniform black pixels are evidence that they are not the product of a scan rather than the product of a well-documented process that enhances elements of the source material.
Because you are full of **it.
No ink scans to black. The Obama uniform black from your "well documented process" was RGB = 26,45,31, not 0,0,0.
ML/NJ