A History of Short Words

From the New York Times Crossword Puzzle

CLEF

Sun, 8 Sep '24
Head of staff?
Tue, 20 Aug '24
Staff leader?
Mon, 24 Jun '24
Musical staff symbol
Sat, 9 Mar '24
Sign in front of some bars
Sun, 3 Sep '23
Staff symbol
Mon, 21 Nov '22
Musical symbol resembling an ampersand