Pencil sketch of 'Maze at Hilton Huntingdon 1660' [Cambridgeshire]. A3. Oct. 1978 RAS . Robin's inspiration for the Pavement Maze in York Gate's driveway.
Ink drawing of the Twist Column Sundial 'A fine spiral twist column sundial surmounted by globe dial'; pencil sketches of parts on front and back of paper.
Robin saw a similar sundial in London and asked a local stonemason to make a one based on his…