Name	Known for
Jack Perkins Self - Host Self - Host See fewer	Sapporo 1972: XI Olympic Winter Games (1972)
Alexander Graham Bell Self (archive footage) Self (archive footage) See fewer	Selig-Tribune, No. 24 (1916)
Robert V. Bruce Self - Biographer of Alexander Graham Bell Self - Biographer of Alexander Graham Bell See fewer	Biography (1987)
Edwin S. Grosvenor Self - Great grandson of Alexander Graham Bell Self - Great grandson of Alexander Graham Bell See fewer	Alexander Graham Bell: The Sound and the Silence (1991)
Gilbert M. Grosvenor Self - Great grandson of Alexander Graham Bell Self - Great grandson of Alexander Graham Bell See fewer	Amazing Planet: Mummies Unwrapped (1998)
Helen Keller Self (archive footage) Self (archive footage) See fewer	Whirlpool (I) (2017)
Hugh Bell Muller Self - Great-grandson of Alexander Graham Bell Self - Great-grandson of Alexander Graham Bell See fewer	Biography (1987)
Judith Tulloch Self - Alexander Graham Bell Historian Self - Alexander Graham Bell Historian See fewer	Biography (1987)
Mark Twain Self (archive footage) Self (archive footage) See fewer	Big River
James Grosvenor Watson Self - Great-great-grandson of Alexander Graham Bell Self - Great-great-grandson of Alexander Graham Bell See fewer	Biography (1987)