Historical clue formulations

• TV host Geist — 2017-10-22
• "Steamboat ___," first Mickey Mouse cartoon — 2009-02-05
• Jockey Shoemaker — 2007-01-31
• *Amorous alcoholic in "The Philadelphia Story" — 2006-10-18
• ← Player with this retired number, informally — 1997-10-05