LISP 1.5 Programmer's Manual
ISBN: 0262130114
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Found in 1 comment on Hacker News
ruraljuror · 2016-06-24 · Original thread
Perhaps this is what you're referring to, but according to Kay they can be found in Lisp.

http://queue.acm.org/detail.cfm?id=1039523

https://www.amazon.com/LISP-Programmers-Manual-Michael-Levin...

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