Historical clue formulations

• Helper in conning — 2020-09-14
• Talker-upper, maybe — 2015-10-08
• Participant in 1-Down — 2013-08-14
• Con man's plant — 2012-09-23
• Assistant in a con game — 2006-10-23
• Swindler's aide — 2006-02-21
• Three-card monte assistant — 2002-08-12
• Con artist's accomplice — 2000-10-19
• Barker's partner — 1999-05-02
• Casino employee, maybe — 1996-07-17
• Con artist's aide — 1995-02-27