Here is a record of a search by Tom Turner on Google.co.uk on the topic of Postmodern Garden Design on 14th September 2011. This link postmodern garden design should produce a fresh search. I was disappointed to find (1) 5 of the 10 sarch returns relate to comments I have made myself (2) 4 of the other 5 have little to do with gardens. When I last did this search on 25th November 2010 the results were equally disappointing. But there is one significant improvement on 14th September 2011: the Wiki entry on Charles Jencks has joined the list. He is by far the most important designer to have considered the issue and I hope that by 2012 he will be at the top of the list.