Historical clue formulations

• Facebook offerings: Abbr. — 2020-11-04
• Things opened at banks: Abbr. — 2017-11-27
• Places to keep 9-Down: Abbr. — 2017-05-26
• Sales reps maintain them: Abbr. — 2015-12-30
• Bank nos. — 2012-02-07
• Bank holdings: Abbr. — 2011-11-15
• Banking nos. — 2010-11-10
• Sales off. folders — 2009-12-17
• Ad agcy. clients — 2009-11-10
• Bank holdings: Abbr. — 2006-11-06
• Bank holdings: Abbr. — 2004-08-09
• Stops on a sales rep's rte. — 2000-01-26
• Customers: Abbr. — 1999-10-03
• S.&L. units — 1999-06-19
• Ad salesmen have them: Abbr. — 1996-10-03
• Citibank nos. — 1996-07-10
• NOW and others: Abbr. — 1996-04-13