I’ve tracked down the original home of the printed out Wikipedia (or at least what I think is the original post). Turns out it was only the “featured articles” that were printed.
Here’s what it would look like if the whole thing was printed using this criteria…
“If you were to print out the whole thing (not just the featured articles), this is what it would look like based on volumes 25cm high and 5cm thick (some 400 leaves), each page having two columns, each columns having 80 rows, and each row having 50 characters.”