A History of Short Words

From the New York Times Crossword Puzzle

PHI

Tue, 28 Jun '22
The Eagles, on scoreboards
Fri, 27 May '22
Letter after upsilon
Mon, 11 Apr '22
___ Beta Kappa
Mon, 20 Dec '21
Letter before chi
Mon, 4 Oct '21
___ Beta Kappa
Sun, 19 Sep '21
Letter two after tau
Sun, 21 Mar '21
Golden ratio symbol