A History of Short Words

From the New York Times Crossword Puzzle

MDS

Sun, 28 Nov '21
Ward workers, for short
Wed, 20 Oct '21
Some O.R. and E.R. staffers
Sun, 15 Aug '21
Nonwriting credentials for Conan Doyle and Chekhov, informally
Sun, 30 May '21
G.P.s, e.g.
Tue, 12 Jan '21
E.R. V.I.P.s