| Description | /1. 1 x ts. letter, 5 June 1979, from Roger Cook of the University of Reading, Reading, to Roland Penrose, 1p.
/2. 1 x ts. letter, 20 June 1979, from Roland Penrose to Roger Cook of the University of Reading, Reading, 1p.
/3. 1 x ts. letter, 14 December 1979, from Roger Cook of the University of Reading, Reading, to Roland Penrose, 1p.
/4. 1 x ts. letter, 20 December 1979, from Roland Penrose to Roger Cook of the University of Reading, Reading, 1p. |