Historical clue formulations

• 11-Down's partner in life and in "To Have and Have Not" — 2016-07-20
• One of an old film duo — 2004-12-31
• "The Big Sleep" co-star — 1999-07-23
• 1970 Tony winner for "Applause" — 1997-11-20
• Betty Joan Perske, familiarly — 1994-10-14