| Description | /1/1. 1 x ts. letter, 29 January 1981, from Janus, Turin, to Roland Penrose, 1p.
/1/2. 1 x ts. letter, 5 February 1981, reply from Roland Penrose to Janus, Turin, 1p.
/2/1. 1 x ts. letter, 11 December 1983, from Neil Baldwin, New York, to Roland Penrose, 1p.
/2/2. 1 x ts. letter, 4 January 1984, reply from Roland Penrose to Neil Baldwin, New York, 1p. |