Historical clue formulations

• See 2-Down — 2017-01-17
• See 4-Down — 2016-08-13
• Casting director? — 2011-08-11
• See 17-Across — 2006-04-26
• Pole carrier — 2000-01-21
• One who drops a line — 1998-04-16
• "Mutt and Jeff" cartoonist Bud — 1994-07-17