Prince Ripper and the Royal Family: An analysis of how the modern media views the Royal Conspiracy
Ryan Thornsberry
The Underground Who Chapbook Press, 2005
Chapbook, 27 pages.
Casebook Review: 

A surprisingly strong and short study of the royal conspiracy theory. The author doesn't try to prove or disprove the conspiracy (though he makes it clear its a highly unlikely theory), but rather attempts to show the psychological and sociological impetus behind such conspiracy theories. Certainly worth a read for those interested in this aspect of the study.