There is much to be learnt from pictures. It was film producer and pioneer of the American animation industry Walt Disney who said, 'Of all of our inventions for mass communication, pictures still speak the most universally understood language.' And, of course, we must not forget the wider use of, 'A picture is worth a thousand words.' How wonderful it must have been to have called into Rudolph Ackermann's shop at 96 Strand, London in the 1790s...