For a good "before I studied the art, loops were just loops; while I was studying the art, loops were no longer loops; after I studied the art, loops were again loops" paper, I like:

AIM-443: Lambda: The Ultimate Goto (1977)

https://dspace.mit.edu/bitstream/handle/1721.1/5753/AIM-443....

Lagniappe: https://www.99-bottles-of-beer.net