Clifford Harper (ILT)/ James Thomson
(1)
Clifford S. Ackley and Katherine Harper
(1)
David Graeber (CON)/ Clifford Harper (ILT)/ Nina Power (CON)/ Freedom Press (EDT)/ Bertrand Russell (CON)
(1)
Frederic Gros/ John Howe (TRN)/ Clifford Harper (ILT)
(1)