Philip K Dick's alternative memory lane
http://www.theguardian.com/books/booksblog/2009/feb/05/philip-k-dick-high-castle-hugo
A helpful summary and reflection on the novel in The Guardian.
Phllip K. Dick
http://www.sf-encyclopedia.com/entry/dick_philip_k
A biography of Phillip K. Dick by the Encyclopedia of Science Fiction.
