Historical clue formulations

• Some med. facilities — 2016-01-10
• Civic bldgs. — 2014-05-08
• Some basketball players: Abbr. — 2013-12-15
• N.F.L. snappers: Abbr. — 2012-06-05
• Midpoints: Abbr. — 2012-01-29
• They play in front of QBs — 2011-09-21
• Hubs: Abbr. — 2009-09-02
• Middles: Abbr. — 2007-07-29
• Some basketball players: Abbr. — 2006-09-13
• Shopping sites: Abbr. — 2006-03-24
• Major civic bldgs. — 2004-09-05
• Municipal sites: Abbr. — 2000-02-26
• Middles: Abbr. — 1998-05-04