A History of Short Words

From the New York Times Crossword Puzzle

PGA

Thu, 25 Nov '21
___ Tour
Wed, 22 Sep '21
Sports org. with the Ryder Cup
Wed, 18 Aug '21
Babe Zaharias was the first woman to compete on its tour, in brief
Sun, 20 Jun '21
Tour grp.
Fri, 26 Mar '21
Club club, for short
Thu, 4 Mar '21
Org. for drivers