The lyrics to the song "Crown of Creation" were lifted verbatim from the 1955 John Wyndam book Rebirth [The Chrysalids] and never properly credited. I found this disappointing, but forgivable as in one lover to another… "How could you? I still love you!" Bearing in mind also that Jerry Garcia never properly credited Elizabeth Cotton for "Sugaree" on the album.
The book is a post-nuclear apocalyptic novel of a band of survivors in Labrador who are evolving into mutants and believe they are the last remnant of humanity. At the end of the book a delegation from survivors in New Zealand arrives, making contact. Their words to the Labrador contingent are the lyrics of "Crown of Creation".
The book is a great and little-known classic which every Airplane freak should read, and the equal in every sense to other post-apocalyptic novels like A Canticle for Liebowitz, Dahlgren, and Triumph.