Historical clue formulations

• The "L" of B.L.M. — 2020-09-20
• A cat is said to have 60-Across of them — 2017-12-20
• Video game units — 2017-08-03
• A cat is said to have nine of them — 2017-02-07
• Biographies — 2008-08-28
• Video game allotment — 2004-08-20
• Subsists (on) — 2002-08-13
• Feline ennead — 1999-09-26
• Subsists — 1998-07-23