Morton Feldman anecdote about Barnett Newman

Morton Feldman tells this ancedote in a conversation with John Cage titled “The Nature and Goals of Our Music,” recorded for radio in July 1966 (dated by the mention of the death of D.T. Suzuki). It’s collected in Complete John Cage Edition 51: Radio Happenings (1966–1967) (mode289): When I was living on 19th Street in that building with Barney Newman, who lived upstairs, I remember for about a year I took the phone out. And he came in one day, and he said, “Oh, may I use your phone?” I said, “Well, Barney, it’s disconnected.” He looked at me, and then he looked down at the phone for a long time, and he said to me, “You’re a hero. How is it possible? How did you do it?” Barney is Barnett Newman. I looked in the index of Barnett Newman: Here, the new biography by Amy Newman (Princeton University Press, 2025), but there’s no entry for Feldman.