Ralph 
                     Humphrey did 
                     very interesting work in the sixties. His close valued earth colored 
                     border paintings with softly brushed surfaces are closer to Marden's 
                     work especially in touch than my border paintings were. Humphrey's 
                     border paintings connect to mine in format but where mine verge 
                     on literal depictions of the void his were much more painterly. 
                     His nice touch, close values and felt surfaces lend a sense of 
                     concentration to his work of this period. He also made a series 
                     of line paintings in 1966 that connect to Marden, Christensen, 
                     early Pettet and some of my work of 1966-1967. I think Humphrey 
                     is a vastly underrated painter. His stain paintings of 1967-1968 
                     are amazingly lyrical and his shaped canvasses through 1971 are 
                     also boldly lyrical. As the seventies progressed his work got less 
                     pictorial and more object oriented which is a shame. Unfortunately 
                     I think the Formalist, Anti-Formalist rhetoric split Humphrey apart.