Self - Naval Historian 2 episodes, 2015-2016
Self - Naval Historian (как Jan Witt)
Self - Naval Historian, German Naval Association / ... 4 episodes, 2016-2020
Self - Naval Historian, German Naval Association
Self - Naval Historian, German Naval Association (как Dr. Jann Witt)
Self - Naval Historian, German Naval Association (как Dr. Jann Witt)
Self - Naval Historian (как Dr. Jann Witt)
