A History of Short Words

From the New York Times Crossword Puzzle

MLS

Wed, 1 May '24
Sports org. for the Colorado Rapids
Sun, 14 May '23
Org. for D.C. United and the L.A. Galaxy
Sat, 6 May '23
Org. for the New England Revolution
Fri, 10 Mar '23
Org. for D.C. United
Thu, 12 Jan '23
Units on a graduated cylinder: Abbr.
Wed, 28 Dec '22
There are about five of these in a tsp.
Fri, 25 Jun '21
Org. for the Houston Dynamo and Austin F.C.