Historical clue formulations

• Cosby's "I Spy" co-star — 2019-01-27
• "PT 109" actor Robert — 2017-07-15
• Late actor Robert of "I Spy" — 2010-04-06
• "I Spy" co-star — 2008-05-08
• Cosby's "I Spy" co-star — 2004-10-05
• "I Spy" co-star Robert — 2003-04-23
• Cosby's "I Spy" co-star — 1998-10-28
• "PT 109" actor — 1997-10-10
• "I Spy" co-star — 1996-10-06
• "I Spy" star — 1994-07-20