Thanks to a generous friend in Memphis and the magic of amazon.com this just jumped to the top of my reading list...
Give My Regards to Eighth Street: Collected Writings of Morton Feldman
w/ Afterword by Frank O'Hara
Feldman on Philip Guston..."Then there was Guston. He was the arch crank. Very little pleased him. Very little satisfied him. Very little was art. Always aware in his own work of the
rhetorical nature of the complication, Guston reduces, reduces, building his own Tower of Babel and then destroying it."