You wrote: "Why isn't it on his or the Libertarian websites??"
Because John Hospers doesn't have a web site, and because the letter just went out a few hours ago. But you can find the letter, since I last checked a couple of hours ago, on www.Solohq.com and on http://bidinotto.journalspace.com -- with many more to come. The owners of both sites are libertarians.
Rebecca505