Still not sure I believe that the letter is genuine.
I found a "real" e-mail address on the USC website and sent a quick note. (johnhospers@sprintmail.co) I'll see what happens.
AJ
Libertarian founding father - John Hospers -
is listed in the Los Angeles phone directory.
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.
johnhospers@sprintmail.co
FWIW...I contacted Dr. John Ray (this letter is on one of his blog sites too) and he said he receieved the letter directly from Dr. John Hospers in an e-mail. He claims he is certain it is genuine.
http://jonjayray.netfirms.com/main.html