| Description | /1. ts. text with ms. annotations, [1961], entitled 'The Persistent Image' by Roland Penrose, 13p.
/2. ts. text, [1961], entitled 'The Persistent Image' by Roland Penrose, 11p.
/3. ts. text with ms. annotations, n.d., entitled 'Elementary Thoughts on the Image' by Roland Penrose, 6p. |