As of August 6, 2012, I see that none of his 2012 shows are available (example), while his 2007-2011 shows are.
The full archive list isn’t available, but you can access some of them individually through my past articles, and they follow a particular pattern so you can choose a particular show by modifying the URL.
Is this just an oversight, or were his 2012 shows particularly threatening to some people that they had to be removed? Anyone who listened to the last few weeks of his broadcast will remember how hard-hitting they were. The fact that his archive list was pulled the same day a replacement show aired was suspicious enough for such a long-running show, and I doubt that the selective pulling of the 2012 archives was an oversight.
His extensive collection of interviews exposing the AIDS scam from 2008-2010 are still available indefinitely.
For more on the cancellation of his show, see my article, Why the termination of George Whitehurst-Berry’s GCN show likely wasn’t strictly a business decision.