Historical clue formulations

• Earners of credits — 2021-06-06
• Screen ___ Guild — 2020-08-31
• The "A" of SAG — 2020-03-31
• Hollywood labor groups — 2018-03-25
• Pitt and Penn — 2015-10-22
• Cast — 2010-05-02
• Movie set? — 2008-06-14
• They may be seen in cameos — 2004-05-09
• Cast — 2004-05-02
• Pitt and Penn — 2003-06-20
• They're cast — 2002-04-24
• Line providers — 2000-01-13
• Hunt and Peck — 1998-05-07
• The "A" in S.A.G. — 1997-10-13
• Equity members — 1995-11-23
• Thespians — 1995-08-29
• ____ Equity (stage group) — 1995-06-28
• Hunt and Peck — 1994-12-04