Historical clue formulations

• Pipe organ? — 2026-09-10
• See 116-Across — 2022-10-16
• Where inhaled air goes — 2021-11-22
• Pulmonologist's study — 2021-06-05
• It's breath-taking — 2020-03-04
• Iron ___ — 2019-03-17
• Breather — 2018-12-09
• Inspiring part of the body? — 2016-03-15
• See 52-Down — 2015-11-09
• Breather — 2014-06-25
• Breathing space? — 2013-09-04
• One housed in a chest — 2013-05-25
• Where inhaled air goes — 2011-05-02
• Alveoli site — 2010-12-22
• Air bag? — 2010-11-07
• One getting an inspiration? — 2010-10-13
• Breather — 2009-10-11
• Aqua-___ — 2009-07-13
• Where inhaled air goes — 2009-03-16
• Pulmonary organ — 2008-05-20
• It's found in a chest — 2007-11-02
• Chest part — 2006-02-08
• Air bag? — 2001-12-21
• Place for a breath of fresh air? — 2001-11-26
• Air bag? — 2000-05-06
• What "pneumo-" means — 1999-12-29
• It's breath-taking — 1997-09-02
• Chest organ — 1997-07-21
• The "pneumo" in pneumonia — 1997-04-30
• Item in a chest — 1995-10-08
• Bronchiole locale — 1994-01-12