| Description | /1/1. 1 x ts. letter, 18 July 1969, from Colin P. Walker of Coventry College of Education, Coventry, to Roland Penrose, 1p.
/1/2. 1 x ts. letter, 31 July 1969, reply from Roland Penrose, to Colin P. Walker of Coventry College of Education, Coventry, 1p. |