Historical clue formulations

• They may have many stops — 2016-02-11
• Mass merchandise? — 2012-06-16
• Locations for many pipes — 2011-03-19
• Hammond products — 2009-08-19
• Eyes and ears — 2009-08-16
• Hearts, e.g. — 2009-07-15
• Much-needed donations — 2009-06-13
• Church hymn accompaniers — 2007-12-03
• Appendixes, e.g. — 2006-01-28
• These can be vital — 2006-01-24
• Hymn-playing instruments — 2005-09-19
• Some are vital — 2004-04-18
• Some are vital — 2003-04-25
• They may be vital — 1998-08-09
• Vital _____ — 1995-10-22
• Viscera — 1995-06-04