Historical clue formulations

• Communication method with dits and dahs — 2026-04-07
• Inventor who might be described as dotty or dashing? — 2024-05-01
• ___ code — 2024-02-13
• Telegraph pioneer Samuel — 2023-05-10
• Man with a code — 2023-05-02
• Inspector of British fiction — 2022-06-04
• Name spelled with six dashes and six dots — 2022-04-22
• - - - - - .-. ... . — 2019-12-18
• Inventor of a "code" — 2016-11-28
• -- --- .-. ... . — 2014-04-06
• Inspector of crime fiction — 2014-03-30
• With 44-Down, "key" invention of the 1830s — 2014-01-09
• Inventor after whom a Yale residential college is named — 2012-09-23
• Man with a code — 2010-09-20
• Samuel with a code — 2009-12-21
• "What hath God wrought" sender — 2009-09-09
• Robert who won a Tony for "How to Succeed in Business Without Really Trying" — 2009-07-15
• Inspector of crime fiction — 2008-07-10
• Kind of alphabet — 2006-06-03
• Kind of alphabet — 2005-09-09
• Code name — 2005-05-26
• Telegraph pioneer — 2004-12-27
• Samuel with a code — 2004-03-29
• Code name — 2001-11-23
• Lewis's mystery-solving partner — 2001-09-22
• Tony-winning actor of 1962 and 1990 — 2001-08-26
• Inventor who inspired this puzzle — 2000-12-29
• Dotty inventor? — 2000-05-07
• "Tru" Tony winner — 1998-10-30
• Code name — 1998-06-07
• Code name — 1998-05-03
• Kind of signals — 1998-04-11
• Kind of alphabet — 1997-09-07
• 40's jazz-style singer Ella Mae — 1994-12-03
• Colin Dexter's inspector — 1994-05-29
• Code name — 1993-12-14