On BBC Radio 4 Extra, Monday 12 May at 13:30 and other times:
Mr Pollock's Theatres: How did toy theatres begin? Simon Callow explores the world of cardboard make-believe.
http://www.bbc.co.uk/radio4extra/programmes/schedules/2014/05/12
BBC Radio 4 Extra – Schedules, Monday 12 May 2014
www.bbc.co.uk