Historical clue formulations

• Old cornball variety show with Buck Owens — 2019-12-24
• Donkey's call — 2017-06-11
• Nashville-based variety show, 1969-92 — 2013-06-16
• Act like an ass — 2013-02-08
• Donkey's sound — 2010-05-31
• Old Nashville-based TV show — 2002-02-02
• Farm cry — 2000-08-30
• Hillbilly TV fare — 1997-09-16
• Bray — 1997-08-29
• Bray — 1996-07-17
• Bray — 1996-02-28
• Bray — 1995-04-11