The second link just says there are some print ads which are interesting. The third is a link about niche books but points out textbooks are huge sellers. As textbooks continue to move online, this will continue to decrease. Unfortunately, a friend of mine will likely lose what he thought would be a comfortable retirement because of the death of print...

OT: The company mentioned has print facilities in southern central PA in northwest MD, which are near to each other. There is another town in central PA which used to be known as the only town with two paper mills, Roaring Springs PA. One of them, which was owned by Appvion, may have just been rescued from bankruptcy. the company has other operations throughout the country. It was employee owned but now the employees have nothing. As print disappears, paper mills become obsolete and close.

OT OT: For those unaware, paper mills create a stink which carries for miles. Residents become nose blind. As a kid, when we would drive through the town, which we did frequently as it was on the way to the airport and all points south, like DC where my mom's sisters lived, my parents would give each kid a piece or Trident, which we would unwrap, stick under our noses and breathe through until we were out of the town, at which point we could chew the gum.