Where is the love for Nicholas Slonimsky's Lexicon of Musical Invective?

This is great:

Yes, there actually was a time when musicologist Nicolas Slonimsky could be a guest on the Tonight Show—and it's finally on YouTube. https://t.co/SFnVQlv1v2 He talks with Johnny Carson about John Coltrane, polyrhythms, Frank Zappa, etc. (h/t Rob McAlear). pic.twitter.com/SdRAqKkuvo

— Ted Gioia (@tedgioia) January 10, 2021