Secret Mysteries of America's Beginnings Volume 2: Riddles in Stone - The Secret Architecture of Washington D.C. Online

Joe Schimmel - Self - Expert, Stanley Monteith - Self - Expert (as Dr. Stan Monteith) , William Schnoebelen - Self - Expert, Blue Deckert - Self - Expert (as Ed Decker) , William T. Still - Self - Expert, Ian Taylor - Self - Expert, S. Brent Morris - Self - Expert (as Dr. S. Brent Morris) , Trevor W. McKeown - Self - Expert, Robert Hieronimus - Self - Expert (as Dr. Robert Hieronimus) , Jim Alison - Self - Expert, Obadiah S. Harris - Self - Expert (as Dr. Obadiah Harris) , Buff Parry - Self - Expert, Peter Dawkins - Self - Expert, Zohara Hieronimus - Self - Expert, Jane Henson - Self - Expert