Historical clue formulations

• Recipient of the inaugural Mark Twain Prize for American Humor — 2024-04-06
• Comedian Richard who wrote "What I'm saying might be profane, but it's also profound" — 2023-08-28
• Comic who said "I'm not addicted to cocaine. I just like the way it smells" — 2022-06-17
• Comic whom Seinfeld called "the Picasso of our profession" — 2020-08-22
• Seinfeld called him "the Picasso of our profession" — 2013-10-06
• Sen. Mark of Arkansas — 2004-03-26
• Funnyman Richard — 2001-01-01
• He played the Wiz in "The Wiz" — 1999-10-17
• Comedian Richard — 1998-09-14
• Richard of "Bustin' Loose" — 1994-06-20