A History of Short Words

From the New York Times Crossword Puzzle

RNS

Wed, 31 Aug '22
O.R. staffers
Thu, 19 May '22
I.C.U. specialists
Fri, 1 Apr '22
E.R. staffers
Fri, 18 Feb '22
I.C.U. figures
Thu, 27 Jan '22
O.R. staffers
Mon, 19 Apr '21
E.R. staffers