Historical clue formulations

• Quick races — 2020-10-26
• Morse code O's have three of them — 2019-12-02
• Takes off in a hurry — 2018-10-21
• Counterparts of dots, in Morse code — 2017-09-11
• - - - — 2013-06-03
• Five of them represent a zero — 2013-03-09
• Tom, to Samuel F. B. Morse — 2005-02-25
• They're sometimes mad — 2003-06-13
• Morse code bits — 2002-01-07
• Track events — 1996-12-05