Postcard. Postally unused.
Star Series. Published by G. D. & D., London.
Bought from an eBay seller in Edinburgh, United Kingdom.
"Enormous crowds gathered in Hampstead on bank holidays, and a large funfair was also put on for revellers. By the beginning of the 20th century the scene had grown more respectable. Less theft and rowdiness was reported than in the 19th century. ... Hampstead Heath held the most famous bank holiday festivities in London. On Easter Monday 1910, 200,000 people came to celebrate on the heath, 50,000 of them arriving by train." - www.20thcenturylondon.org.uk/server.php?show=conObject.44...
I wonder, is this Whitestone Pond, or a corner of the Highgate Ponds? [UPDATE: Location of the Children's Paddling Corner identified as a corner of the Vale of Health pond by BigPhil61. See comments.]
NOTE: This post has been referenced by Carole Cadwalladr in her review of the book Taking the Waters by Caitlin Davies for The Guardian (Sunday 20 May 2012). Should I point out the journalist has confused the 1900s with the 19th century? :)