The double-page letter thread on pages 2-3 and 80-81 has what I believe to be a minor error. Lower half of the left-hand side, the L from COAL is on a different row, leading to the words apparently being COA and WL.
Oh thank you, that is a brilliant spot. The O has wandered away from (what was originally) HOWL. I must have missed it while I was moving the whole set about to centre it all better on the spread.
I'll get that fixed in the morning and uploaded. :)