A key to Alexander Graham Bell's experiments was one of these, procured by a doctor friend, Clarence Blake
clues - Season 25 [PAR] Jul 24, 2009 ... 1 HITS OF THE 1970s: In 2008 doctors said that, aptly, this Bee ..... #5554, aired 
2008-10-30, INVENTORS: A key to Alexander Graham Bell's experiments was 
one of these, procured by a doctor friend, Clarence Blake an ear.