While enjoying that read, I kept thinking along the way "I wish the original TeX source of this PDF were available somewhere as I'd love to see this rendered for my high resolution display the way Knuth intended."
The 37-page paper that precedes the error log, The Errors of TeX, has been reprinted (as always, with minor corrections) as Chapter 10 of the book of collected papers titled Literate Programming https://cs.stanford.edu/~knuth/lp.html — Knuth has not published its .tex source, though it's not impossible to find…