https://www.buffalo.edu/ubreporter/archive/vol30/vol30n14/q&a.html
3 Dec 1998:
About three dozen. Among these have been Creeley, Fiedler, Rayner-Banham, Federman, Barth, Coetzee, Chisolm, Bunn, Bernal, Kennedy, Dennis, Hammond, Elkin, Guitart, Jacobs, Sussman, Berlyn, Somit, Fradin, Serres, Peradotto, George Levine,