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by Macuyiko 4716 days ago
See http://practicaltypography.com/end-credits.html#Colophon

> The book was writ­ten and de­signed us­ing Pollen, > a book-pub­lish­ing sys­tem that I cre­at­ed for this > project. Pollen was built with Racket, a pro­gram­ming > lan­guage de­scend­ed from Scheme & Lisp.

So no, it doesn't seem to be published.