Historical clue formulations

• Monotonous hum — 2026-08-27
• Bagpipe's sound — 2025-06-29
• It might go way over your head — 2024-10-16
• Remote-controlled flier — 2024-09-30
• Remote-controlled aircraft — 2024-04-30
• Didgeridoo sound — 2024-04-06
• Quadcopter, e.g. — 2024-01-14
• Device providing oversight? — 2022-10-23
• Aid in filming aerial shots — 2022-02-07
• Aerial view provider — 2021-09-02
• Go on and on — 2021-07-25
• Experimental delivery option — 2021-04-30
• Futuristic delivery device — 2021-04-08
• Futuristic deliverer of packages — 2019-09-22
• Flier on a mission — 2019-08-11
• Means of surveillance — 2019-06-01
• High-tech package delivery method — 2018-01-17
• Unmanned aircraft — 2017-09-25
• ___ strike — 2017-01-11
• Remotely controlled flier — 2016-08-16
• Hurdy-gurdy sound — 2014-01-04
• Spying aircraft — 2013-08-12
• Predator ___ — 2013-04-03
• Pilotless plane — 2012-05-14
• Plane over Yemen, maybe — 2011-06-26
• Queen's attendant — 2009-04-23
• Go on and on — 2009-01-24
• Queen's subject? — 2008-08-07
• Bor-r-ring voice — 2007-07-17
• Pilotless aircraft — 2007-03-12
• Hum — 2006-11-13
• Stingless bee — 2006-06-20
• Military reconnaissance tool — 2005-10-30
• Hum, e.g. — 2004-11-05
• Pilotless plane — 2004-10-03
• Speak in a monotone — 2004-07-19
• Dull speaker — 2004-05-19
• Be a poor public speaker — 2003-12-25
• Hive member — 2002-05-08
• Stingless flier — 2002-03-26
• Uninspiring talk — 2000-12-17
• Unengaging speaking voice — 2000-09-04
• Pilotless plane — 2000-07-10
• Dreary sound — 2000-02-20
• Stingless bee — 1999-12-16
• It doesn't sting — 1999-09-05
• Many a lecturer — 1998-03-22
• Bagpipe part — 1998-02-22
• Speak monotonously — 1997-11-27
• Go on and on — 1997-02-27